So I thought up a game for work.
I am calling it: "Head, Rear, or Other"
When you hear a random noise at work that sounds organic you can classify it as:
1. Head - a noise that comes out of the head
2. Rear - a noise that comes out of the rear
3. Other - unknown or unspecified noise source

Can be combos if need. Such as "Head or Rear".

So the first thing my coworker did was make motions like he had gas. I said "Head".