906: I am not allowed to make an adept with super-high charisma, social skills, and the commanding voice power in an attempt to make Jesse Custer.
907: If, for some reason, the GM allows me to play an infected I am not allowed to call him Cassidy. Nor is he to be Irish.
908: I am to stop making characters from foreign lands as an excuse to speak in different accents.
909: My Russian character is not allowed to claim that everything is a Russian inwention. Nor is he allowed to ask people if they have seen moose and sqverl.
910: There is no such thing as a moose shapeshifter. Even if there was, I would not be able to play one with a logic of 1.
911: It doesn't matter if the rules in Arsenal theoretically allow it, I am not allowed to play Batman.
912: It doesn't matter if the rules in Augmentation theoretically allow it, I am not allowed to play Spider-man.
913: I am not allowed to trap the PC's in an underground facility with hordes of feral ghouls, a psychotic AI and almost no ammo.
914: The Chicago CZ is not Raccoon City.
915: I am not allowed to Dikote™ Duct Tape.
916: "Fun with chemistry" is not a valid character concept.

Says who?

917: I am not allowed to write porn for a PbP.
918: I am not allowed to have it graded on quality of sexual positions

I'm pretty sure there is. It was used as an example by one of the devs when I asked what happens to worn armor when a shifter shifts.
"Ever seen a moose in power armor?"
"Ouch! Antlers went right through the helmet."

919: I'm not allowed to tell my fellow runners how tasty they smell.
920: I'm not allowed to eat members of the opposition that have been killed after a fight with in site of the my fellow runners.

note: I do not play a infected

921: Licking people is not a way to say hello
922: I am not allowed to film troll and dwarf penetration
923: I am not allowed to make BTL recordings of simsense experiences my characters have
924: I am not allowed to make more money off BTLs than through shadowrunning.

A friend of mine played a character like that in a D&D game. Kept it secret enough that it was a surprise (he and his colossal* sized wolverine dragged corpses into the woods, it was assumed that the wolverien was eating them).

*It wasn't actually that big, but the gnome druid had the alternate feat to get smaller when shapeshifting, the wolverein at "large" size had a belt of rage, had rage (which stack) and got bigger...through something. It was huge sized in combat, while an ant sized druid use the Ride skill to increase its AC whist sitting in its ear.

Well my cher is a bit odd ^_^ I found the talk the others had about if me eatting the dead gangers we killed counted as cannibalism or not. I had a hard time fitting cute and cuddly with my cher when I was being nice to the bull shaman 10 year old orc later in the same run.

925. I am no longer allowed to derail the topic with game stories from other systems.

926. I am no longer allowed to name my characters Jake Armitage, Joshua, or Leonard Church.
927. I must take more than one point in Firearms.
928. My characters do not, nor have they ever, worked for the Umbrella Corporation.
929. Just because the rules allow it, does not mean I can play as Albert Wesker.
930. My character is not fueled by The Power Of Rock.

931. I am NOT allowed to play a Character that is "Especially trained and sent by the alliance to bring back (insert fitting here)"

932: When a GM says that "You need more than 1 point in firearms to be a good gunfighter," I am not to take it as a personal challenge to prove him wrong.
933: My character's Geas for spellcasting cannot be "Shouting faux Latin like Harry Potter"
934: My "Death Touch" Geas cannot be to shout "This hand of mine glows with an awesome power! It's burning grip tells me to defeat you! Take this! My love, my anger, and all of my sorrow! SHINING FINGER!"
935: My character's Geas for casting Powerbolt cannot be to move my hands in a strange fasion, and shout "Hadoken," "Kamehameha," "Dragon Slave," or "Hyperbeam."
936: The Geas for the "orgy" spell cannot be to say "Barberella," "David Bowe" or "Let's do the time warp again!"

937: The Matrix does not allow X-rated avatars in public areas.

Whatcha talking about? The Sixth World's version of Bird Bird IS pornographic in nature.

938: I cannot channel all my resources into ownership of a motorcycle, a bunch of glass knives, and a tactical nuclear device for my sidecar.
939: Having a lot of ranks in robotics-related skills does not give me clearance to build Mega Man, X, or any of the rest.
940: My character is not the current descendant of the Belmont clan of vampire hunters.
941: While I am not prohibited from naming my character Hiroaki "Hiro" Protagonist, I am to keep in mind that it's in pretty poor taste.
942: If asked to use a song that fits my character, MC Frontalot's "Final Boss" is not a valid choice.
943: I cannot have a pet platypus named Perry.
944: A certain Penny Arcade juicing robot cannot be used as inspiration for a drone. Ever.

943b. Also cannot make a techie character with 6 logic and 1 Intuition named "Dr. Doofinshmirtz"
943c. Also cannot make my character a 10 year old super genius.
943d. If a run goes poorly, My first reaction shouldn't be to comlink to my best friend Stacy and complain, then threaten to tell mom.

939b Not any other robot based TV show, such as Astro Boy or what-ever-that-show-was (some anime, I think, that was sorta mega-man-y, but had robots that beat the crap out of each other, the main character's robot having sentience, and the 'bots were "powered" by these little hexagonal chips--which was frequently removed as the "I win" move).

that show was called metabots.

Yes, that's the one. Why did I have such a hard time remembering the name?

Oh, I remember. It's because I only saw like 3 episodes.

Edit:
Speaking of Metabots...
944. I am not allowed to create an NPC based on Mr. Referee, who shows up at the start of every firefight and acts as referee.

945. I am not allowed to pass notes or use skype talking to one PC and then laugh hysterically as the GM.

GUILTY!!!!!

I do this so much.

I made the GM do this. Well, I didn't need notes. The GM knew exactly what I did, when I did it, and it had so much more relevance to him, than the other players.
Paranoia is awesome (I got someone who was a security level clearance above me executed for treason while at the same time accomplishing my secret objective--she hadn't done her job as communications officer, so I whispered to her, "oh don't worry, I did it for you, here's the tape" and handed her the tape....of Victorian music. She on her own convinced the ultraviolet debriefing us to broadcast the tape to all of Alpha Complex, thus completing my mission).

946. I will not stat up the races from the Super Mario games for use by players. No matter how cool the concept of a ShyGuy street samurai is.

947. I will not recreate Jesus as a mystic adept, no matter how easy it is to get legions of Christian soldiers to do my dirty work for me.

948. I will not moon the great dragons, no matter how much I believe they deserve it.

949. As a GM I should not have great dragons moon the PCs. No one wants that mental image.
950. I am not allowed to take a Geas: Somatic Component (order a pizza), just to throw off NPCs ability to identify the mage.

951. "CyberTroll" is not considered a complete background.

952. Ballistic shields do not stack with Riot shields, nor do they stack with more Ballistic shields. One per character.
952a. This cannot be circumvented by carrying multiple dwarves with their own shields.

953. I may not fire multiple exotic ammunitions in a single burst, lest the mechanics of the universe come to a grinding halt.

954. I am not allowed to secretly give dragons exlax pills in the hopes of gaining a large amount of somatic components involving dragon poop.
954. a. Nor am I allowed to have the rest of my team mates stand behind, holding a match or a bag.

955. Basing campaigns off some anime is okay. Basing it off hentai anime- such as Bible Black- is not.
955a. Even if the elf could stand to get laid.

256: I am not allowed to play a character who carries around heavy armor and a shield, but no weapon just to piss off the GM.

957. I am no longer allowed to try Social Engineering techniques on Horizon suits. Sadly, it doesn't work because they know all the tricks.

958 I will not mass-spam the corps. This has unplesant consequences.

954. B. But as a brownie ingrediant for a practical joke on the dragon is certainly permissable, but not advisable.

959. When describing the matrix, my agent shall not be saying yes yes yes or no no no depending on if the result is good or bad.
960. I shall not quote this list of things I am not allowed to do in shadowrun verbatim.
960a. Quoting bits and summation is perfectly acceptable.

961: No characters based on Bill Nye the Science Guy. EVER.
961a: Even if I was allowed to have a character based on Nye, he is not allowed to wield the sawed off shotgun of SCIENCE!!!

961b. Also not allowed to make a character based off of Beakman from Beakman's world.
961c. Most certainly not allowed to make a character based off of Chester, the man in the rat suit.

962: I am not allowed to build my entire world veiw of off dumpshock posters signatures.
963: Even though I already have.
964: The Terrasqua dose NOT exist in the shadowrun universe.
965: I cannot chose "Karl Kombat Mage Fanboy" as a magical tradition.
966: NERPS is not a religion.
967: I cannot clone Gery Gygax.
968: As a GM I am not allowed to reveil that Gery Gygax was an immortal elf in disguise.
969: Ditto for JR. Tolken
970: That Goes doubly for for Aberham Lincoln.
971: That goes TRIPLY for Adolf Hitler
972: All four cannot be brothers.
973: Or the same person in disguise.
974: Or be females in disguise.
975: I am allowed to realise how sad it is that I see Gery Gygax and Tolken on the same level as Hitler and Aberham Lincoln.
976: Don't forget Gorge Lucas.

977: I´m no longer allowed to use twin clones of Hitler as the teams main enemy on a run

I know that comic!

Oh, what a good waste of 25 minutes.
"This is superman, fighting twin clones of Hitler in the future; how do you screw that up!?"

I thought you might.

Wow... now that is an enraged nerd.

978. I will never post a huge list without spellcheck and edit.
979. I will never offend the spirits of those purported to be immortal elves by horribly misspelling their names.

980: I am not allowed to refer to my Roto-Drone as the "Hatredcopter".
980a: Nor am I allowed to call my character "Captain Evil Stomper".
980b: Nor can I "take over your face" with the front of said Hatredcopter.

981: I am not allowed to deactivate my cyberhand's sensory input in order to give myself a "stranger".

982: Even though Yoshimitsu can do it in Soul Calibur, I cannot rotate a cyberhand holding a Katana at sufficient speed to create a helicopter-like effect.
983: Even though Yoshimistu can do it in Soul Calibur, I am not agile enough to pogo on top of my Katana.
984: I cannot get a Cyber-torso with a hidden compartment so that I can Seppuku myself and hit my opponent like Yoshimitsu does.
984a: Even if allowed to do the above, it does not prevent my opponent from rolling defense against the attack.
985: Really, I am to generally NOT try anything Yoshimitsu can do in that game.

Did you notice that Adolf Hitler was the only one he spelled correctly? LOL.

Sorry Lok1, but that cracked me up.

Spelling doesn't matter, as long as I smile.

986: I am not allowed to use the word "vibrating" in conjunction with any of my cyberware.

986a: "Hard," "hot" and "throbbing" are likewise off-limits, even if the faulty mechanisms in my cyberarm mean it's all of the above.

987: I shall remember the difference between science, SCIENCE! and bad sci-fi, as well as which one actually works in the GM's game.
989: While hacking the network of the corp we're doing a run against is perfectly fine, hacking the GM's laptop is not.
990: Even if there are no rules explicitly forbidding it, I may not mount underbarrel weapons on my cyberguns.
991: Juggling grenades is only funny if the rest of the team can survive the explosion too.
992:

992: "That surfer dude that works at the stuffer shack" is not a valid character concept.
993: "That Mallrat that speaks in a Valley accent" is likewise, not a valid character concept.
994: "That one stoner dude that everyone knows that is consistently high as a kite" is also not a valid character concept.
995: "The most southern country yokel you can think of" is super-duper not a valid character concept.
996: "That guy with the Brooklyn accent who alway says 'whataryadoin' to me, eh?" is SOOOO not a valid character concept.