http://www.totaljerkface.com/happy_wheels.php

It's glorious, it's violent, it's totally NSFW. I've been tooling around on this all day and I'm loving it.

I couldn't do anything with the segway level. I probably should have died on the lawnmower level after rolling over forward, but enough of me was left to finish that one.

Yeah, a lot of the levels are hard to impossible. Some need tons of practice.