ass dolphin 

when you swim under water towards a group of unsuspecting people, pull your trunks down, stick your ass out of the water then fart and water shoots out your ass.

something I did on saturday night while about 10 Guinnesses deep.

ass dolphin by Big Nation May 12, 2003

Dolphin ass 

An item or thing that somebody has, that is not desired, so the person in possession hyped it up to be great when it is in fact not.

“Hey Ryan, did you hear James grabbed that new weed pack off his cousin for the low, and he says it’s totally loud?”

“Nah man, I saw it last Friday. James is smoking on that dolphin ass, you know why he got that price? that shits dried out and weak!”

Dolphin ass by MAADark August 26, 2021