Dirty Dynamite 

When you and your significant other place a paper towel tube between each others buttholes and have a "poo battle" until the paper towel tube explodes like some dirty dynamite!

Thes: "Is Mike still in the bathroom?"

Dr. T: "Yea with Jerome, I think they are doing the dirty dynamite because the paper towels are not on the holder."

Dirty Dynamite by MikeMcDirty March 8, 2011

Dirty Dynamite 

When You Have Explosive Diarrhea.

Yo greg thought he was next in line to shoot in beer pong, until he realized he had the Dirty Dynamite from the rotten gyro.

Dirty Dynamite by Meatball60 October 23, 2006