1 definition by MaverikWillBite

Top Definition
When the penis slips out of the middle hole in a pair of underwear boxers, either on purpose or accident; most likely when erect or after masturbation
1. When I got tissue after I drained my sack, I put my boxers on and my penis pulled a peek-a-boo.

2. I pulled my boxers on after I took a shit and my penis decided to play peek-a-boo.
by MaverikWillBite July 20, 2010

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