Top Definition
When a man is fucking a woman doggystyle and "accidentally" slips his penis into the woman's anus, and she responds by turning her head around, arching her back, and making a sound similar to a dolphin or porpoise - "eeee! eeee!"
Dude, last night I tried to slip it in Katie's ass, and she totally started porpoising - it was hilarious.
by GangstaPornBitch February 09, 2008

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.

×