you stick the whole package in the girls mouth
then you slap both hands on both sides of her face
her face then resembles a porpoise...
then you slap both hands on both sides of her face
her face then resembles a porpoise...
Person 1: I totally gave Taiquasia the dutch porpoise last night
Person 2: I know I can tell from the bruises on her cheeks man!
Person 2: I know I can tell from the bruises on her cheeks man!
by jewboy killah 7000 January 3, 2008

Whils having sex, you try to slip you man meat into your partner's back door. She quickly replies with slapping at your hands and love muscle. She also goes ett ehh ett ehh like a dolphin.
John: Bill, have you ave your girlfriend anal yet?
Bill: No, I tried last night but she gave me the beached porpoise.
Bill: No, I tried last night but she gave me the beached porpoise.
by Chris Bryant December 6, 2007

a sex position in which you are standing on a water bed spinning in circles with a japanese partner...also, the water bed must have a dorsal fin.
by britsonthebrain August 26, 2009

When doing a girl doggy-style, switching holes without telling her so that (in a state of great surprise) she turns back to look at you with one eye and squeals.
After their romantic dinner, Nikhil took his linebacker girlfriend home and gave her the ol' one-eyes porpoise.
by Wolverine at MIT February 19, 2003

Guy1: Dude, I totally got to meet the Post-Coitus Purple Porpoise after my date with Sally this week end.
Guy2:Nice, dude, nice.
Guy2:Nice, dude, nice.
by GangstaGangsta214 March 22, 2009

by anonymous June 5, 2021

The up-and-down oscillation of a 2022-era Formula One car at speed, which vaguely resembles the kicking motion of a porpoise. This is due to ground-effects sucking the car to the track to the point of it bottoming-out. The sudden loss of underfloor downforce results in the car the car springing back upwards and the process repeating itself several times per second.
by OldiebutBaddie April 27, 2022
