I had a Corpsman who liked to put a "sample" container containing apple juice on the desk top with other samples, and would take a sip from it occasionally to see the faces of those around. Until some how, it got switched with vinegar and food coloring with out his knowing.

The expression on his face and his spewing out the vinegar was beyond priceless.
What ship type did you get assigned to? Carrier? aka Bird Farm?
WMS