Toilet Grenade 

The same unintelligent man who made kitchen gun made the amazing toilet grenade. It cleans toilets but will also entirely destroy them. You pull the pin, take off the handle, throw it in the toilet, close the lid and in five seconds you can say goodbye to your toilet and possibly your life.

But the actual definition is a giant shit, inside a toilet.

That man blew up his toilet with that new toilet grenade.

Toilet Grenade by I'm funny I swear March 24, 2021

toilet grenade 

The act of straining to have a bowel movement to the point of nearly passing out and then having a release that explodes and covers the entire inside of the toilet.

Robert came into the office and warned everyone not to go into the unisex bathroom because he tossed in a toilet grenade and that it needed a cleaning crew.

toilet grenade by superknox1andonly December 23, 2014