The act of being constipated to such extremities that a baby comes out of one's rectum after the first 5 painful waves of feces exiting the anus
Marcus: Dude, eating all those cream pies really makes me want to unload right now

Henry: Yeah, we should go unload together

(Both Marcus and Henry walk into a bathroom and each go in a stall)

Marcus: This is going well so far

Henry: Yeah, my dump is go...

Marcus: AHHHHHH!!!

Henry: Dude, are you okay? Why did you just interrupt me? Are you constipated?

Marcus: It's worse than constipation! Oh goodness, I think I have a butt pregnancy!
by G-Force da go go July 25, 2009
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