Former funeral director, so I know pooping from the inside. Love music and hi-end (high quality) audio and video equipment. Also I love shitting at airports during long layovers while on business trips and making lots of noise just to be obnoxious, which is done out of shear boredom. Hell I'm never going to see these people again, and it's a great way to have a laugh during a layover.
Speaking of business trips, another thing I think is fun or funny, is to let out a big fart just before exiting the hotel elevator. Major suffering for the poor bastards getting in after you leave.
FMV. The cheap stuff always flushes easiest, thus avoiding the need to search for the elusive plunger an adding embarasment to the situation.
Google search. Was looking for information on shitting at work. The storys always make me laugh so hard I nearly shit my pants. And the difficulties of shitting at work is something we can all relate to.