A place I used to work at had urinals on both sides of the wall, making the users standing almost ass to ass. One of my friends was crop dusted by a VICE president. I don't know how he kept it together.
The only rule is sharting is to be confined to a stall. Everything else is fair game. Well grunting before the fart excessively may be a bit gratuitous.
I always fart real loud and then scream “OOOOW!!!!”.....
The look of horror on some people’s faces is pricelsss...now, if I was feeling really naughty for Halloween, I would do all that and throw some fake blood on the floor while running for a stall with my pants down...