Porpoisism 

Hating the TPP and saying the patriots are better than Dolphins.

HEY! STOP! YOU ARE COMMITTING PORPOISISM!

Porpoisism by anonymous June 19, 2023

intensive porpoises 

1) malapropism for 'intents and purposes'

2) seriously determined and focused aquatic mammals, dangerous to sharks

For all intensive porpoises, whiskey and vodka will both mess you up in a similar manner if you drink enough

intensive porpoises by ichi_san May 2, 2012

porpoising walrus 

A suspiciously inept simile (or metaphor)

The original: "Closer inspection revealed that the rest of the body was encased in 2-3 feet of ice, the body prostrate, suspended into the ice like a porpoising walrus." -- Charlie LeDuff, Detroit News, 28 January 2009

Laurel Fortuner, 1992 Bulwer-Lytton Fiction Contest winner: ". . . her creamy bosom rising and falling like a temperamental souffle . . ."

Excellent porpoising walrus, Ms. Fortuner!

porpoising walrus by jedyca January 29, 2009

porpoising

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.

porpoising by GangstaPornBitch February 9, 2008

Porpoising

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.

Mercedes' W13 car performance is plagued by porpoising down the straights.

Porpoising by OldiebutBaddie April 27, 2022