Top Definition
when taking a poo, you push really hard until there is an explosion of poo that is released from your anus that sprays poo debris and covers the entire inside of your toilet, causing you to scream in pain. also, when the poo hits the water it causes a giant wave to splash back up and drench your butt cheeks with water.
Cole: Oh boy, i just dropped an atomic mud bomb.
Cody: You are lucky to be alive, sir.
by block bros. May 19, 2011

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