Wet Dolphin 

A douche put in a males rectum and released/ Squeezed/ opened right before he achieves orgasm.

Bob wondered if a Wet Dolphin would have a similiar effect as a prostate massage.

Wet Dolphin by Mr. S Burns June 19, 2011

Wet Dolphin 

When an enjoyable sexual encounter is heightened by a quick, unsuspected switcheroo from vagina to anus.

Priskey: Rumor has it you pulled the old wet dolphin last night, you sandbagging son of a bitch.

McCoy: Ya bro. I almost drowned in her pussy, so I swam to her butt.

Wet Dolphin by Jonny Tsunamii August 11, 2012

Wet Dolphin 

Urinating on the seat of a public washroom then leaving it there without cleaning it up.

"Who the hell left this wet dolphin here"

Wet Dolphin by bill 8888888 May 18, 2006