If you had too much time on your hands and you wanted to create an illusion what illusion would you create? Well if you were Kevin Kelm the Crown Prince of too Much Spare Time you might create the Robodump V1.0
RoboDump is a robot. Sort of. And it poops. Sort of. Forever. A horrible, never-ending bowel movement complete with straining grunts, horrific gas, splashes, and pee sounds.If you want to listen audio portion of this illusion go to his site.
The left channel speaker points up into the room (for the voice effects) and the right channel speaker points down into the toilet (for the business-end effects).
I snuck RoboDump into the men's room at the office. Unfortunately, today turned out to be the day of a board meeting. Whoops! It still went over well; the office was abuzz all morning with gossip about the guy in the bathroom. Several people theorized it was the CFO. The janitor commented to someone in the hallway that he wanted to clean the restroom but "this guy's been in there all morning."
I also decided to dress it in businessware to make coworkers less likely to try to talk to it... if it looks like a customer or visiting bigwig, they'll be less likely to offer help or ask for a courtesy flush.