its when you should or are able to leave before you know someones coming
partythrower: hey guys! you found my house.

guy: yeah, but janine was following us!!

partythrower: Damn!! lets prematurely evacuate into the backyard and shut off the lights.
by justcallmeroo August 1, 2009
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Getting caught while sneaking away after a one night stand.
Alternate: an early post-sex exit, i.e. before your partner is deep asleep.
He hooked up with some girl last night and got busted for a premature evacuation.
by csepulv September 21, 2007
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Having to get off the toilet faster than desired because one of your young children has to use the potty.
I was a victim of premature evacuation because Timmy needed to use the potty.
by Daddydef February 20, 2015
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Leaving any social situation with the quickness, without notifyng anyone involved
When Ray-J went to E-rocks house to hang and get some grub on, once she saw what he was cookin she rolled right back out the door without sayin a word. She pulled a premature evacuation.
by The Rev. Ned January 6, 2010
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When during butt sex, the person that is receiving accidentally poops before the sex is over.
I was doing Becky in the butt, when she had a little case of premature evacuation.
by pauly dee July 25, 2010
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Man that new toilet is comfortable, its got all the latest nobs and dials.... dear lord i think i just filled my barrel fronts with the devils fudge...DAMN you premature evacuation
by bennycnz June 20, 2010
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When you exit the elevator on the wrong floor because you weren't paying attention.
(While others watch, you get off the elevator and then come back in.)

You say: "Sorry, I suffer from premature evacuation."
by Barry Rinehart March 13, 2008
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