by BlueSourBalls June 22, 2016

when a young female has had sex so often that her roast BEEF (nasty vagina) sticks inside out like a fish TAIL
by Darbyyy September 29, 2010

In other words, juss sassin' ya. Comes from da playful-but-annoying practice of coming up behind someone who's wearing a long jacket with a divided lower back, grabbing da jacket just above da slit, and then vigorously/rapidly yanking da lower part of da jacket in and out to make da pair of tails slap against da person's butt.
Me: If yer too warm, why doncha go take a dip in da ocean?
You: Jump in da ocean??? Are you crazy??? It's chilly and whitecaps-windy out there!
Me: I know, I know... juss flappin' yer coat-tails...! :D
You: Jump in da ocean??? Are you crazy??? It's chilly and whitecaps-windy out there!
Me: I know, I know... juss flappin' yer coat-tails...! :D
by QuacksO March 23, 2019

Similar to downhill skiing, a girl grabs a genital on both sides of her and preceds to jerk them of like she was skiing. The dolphin tail Is the same thing but she adds her feet into it so she’s jerking another dude off with her feet.
Dude! Last night me, Billy, and Leroy had this girl doing the dolphin tail on us. It was so sexy we all nutted whithin 2 minuets.
by OfficiallyRealFunny May 17, 2018

Oh wow I thought this was a normal circle jerk, but now Luca is touching Mark’s dick instead of his own, it’s a trunk and tail.
by StevenTurkeywaddle June 2, 2023

Mexican tail gunner,, having sex doggie style, pulling out just a you cum and lobbing a load in her hair, then yelling " viva".
by Hinklemeir July 28, 2022

by shampoo_bitch November 1, 2023
