1 definition by Retromobile
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????
Person 2: Oh shit dude, did you just get the drop?
Person 1: WHERE THE FUCK IS THE BATHROOM????
by Retromobile December 17, 2008