When you're having sex with a chick that you know doesn't like anal and attempt to sneak it in her ass. She pulls her ass back, shakes her head no and makes sounds like a dolphin, "Ahhkaa Ahhkaa Ahhka"...hence the dolphin tail.
Man, last night I was fucking this hot chick Tina, I attempted to hit the back door and she cock blocked me with a Dolphin Tail!
by Tina Does Dallas November 14, 2012

by M@ress February 28, 2009

A section of someone's hair that is horizontally striped any two different colours. Much like that of a raccoon's tail.
"Did you see Leigh's got a coon tail? I think it looks pretty ace, not everyone could pull off hair like that."
by Lee Alexandra October 3, 2007

by DA GEMINI February 1, 2010

Damn Meg, you should have cleaned up after that gang bang last night, now you’re mermaid tailing it.
by Emily Inez November 24, 2017

Hot guy or girl Hey! You look cute ;)
CatGirl * blushes * Th..ank you * gets tail boner *
Hot guy or girl : Did you just get a Tail boner?
Catgirl: NO BAKA!
CatGirl * blushes * Th..ank you * gets tail boner *
Hot guy or girl : Did you just get a Tail boner?
Catgirl: NO BAKA!
by Anime gaming Japanese January 27, 2020

Perverted old men that sit around and stroke the tails of their 2 pound white dogs while they sit on their laps.
Did you see that friggin tail stroker Mark sitting in his chair stroking Lucie's tail during the Patriots-Jets game? WTF - can't he do that when we're not around?
by Hempy da stroker March 23, 2019
