1 definition by Retromobile

Top Definition
The exact moment when you realize you're about to have diarrhea. Derived from the way your asshole "drops" right before you shit your pants.
Person 1: Hey dude. Did that coffee have milk in it? I'm lactose intolerant...

Person 2: Oh shit dude, did you just get the drop?

Person 1: WHERE THE FUCK IS THE BATHROOM????
by Retromobile December 16, 2008

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