Top Definition
When you are so drunk you fall asleep after fornication with a partner, and forget mandatory bladder relief. While sleeping you release a raging torrent of urine onto "said" victim. Upon waking up to the smell of asparagus, you make a quick exit.
Damn Steve has perfected the 'ol sleepy peepee so well the girl thought she pissed herself.
by Kaninja May 28, 2005

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Refers to the inevitable loss of blood flow to the penis while bicycling long distances, which numbs the appendage creating the sense that your "pee-pee" is asleep.
I had some serious sleepy peepee at around mile 20 of that ride.
by LancePants September 17, 2009

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When you cannot get it up despite all efforts.
"Wow did you hear, nathan had a sleepy peepee when with that one girl?"
"Really, that sucks."
by senor pockitz August 24, 2009

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One is said to have "Sleepy Pee Pee" when an erection occurs while drowsy.
I just got home from a 12-hour shift and felt a little too comfortable in my bed. As a result, I've got sleepy pee pee. -Zzzzz...
by Wizard Toast October 03, 2010

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The Urban Dictionary T-Shirt

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