Top Definition
when u tell a chick that ur not gonna cum in her but u do anyway casue its funny
hey, i promise not to sum in ur fun hole, and i won't leave u a protein surprise.
by jack package November 05, 2007
5 Words related to protein surprise

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×