Top Definition
Zipping the zipper abruptly causing the zipper to nip the tip of the head of the penis. Also known as a bathroom circumcision or bedroom circumcision. Verb: Zip the tip.
While masterbating, Aaron's mother walked in and he tried to quickly cover up. Unfortunately; he accidentally zipped the tip, then his mother asked why he was crying.
by littler0 January 13, 2009

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