Rocket Plunger

When the pressure in your asshole reaches critical levels that no man can contain, an explosive bowel movement of gargantuan proportions jetisons all material underneath "the rocket", displacing the water in the bowl, creating a geyser of fecal matter. Best used when toilet is clogged.

The appropriate warning for such a manuvuer is to yell "Fire in the Hole!" as loud as possible to save anyone in a 50 foot radius.

Anthony: "Hey our toilet is clogged."
Alex Clark: "That's okay, I have a Rocket Plunger building up."

....

Alex Clark: "Fire in the hole!"
BOOM.
Anthony dies.

Rocket plunger

When having anal sex with someone and instead of ejaculating you pee. Resembling a pump up water rocket.

My girlfriend told me to pound her fartbox and I slipped her the rocket plunger