Juss flappin' yer coat-tails

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

tail cramp

A tail cramp is an individual whom is the result of the incorrect sperm reaching the egg due to the correct sperm suffering from a tail cramp.
Someone who just isn't right.

"I don't know what it is with that guy, but something ain't right."
"Yeah I know. Tail cramp for sure."

smoking a rats tail

to do intentionally something that you know is unappealing or that will hurt you in the long run

“Don’t go off and smoke a rats tail”

“I’d better not catch you smoking a rats tail!”

Moose Tail

A "moose tail" is a slang term that refers to the outline or bulge created by tight clothing, especially pants, around the genital area. While originally used to describe a visible silhouette resembling a moose's tail, it is now often associated with male genitalia. It is advised to use discretion and sensitivity when discussing or referring to such terms in a respectful manner.

Taint your ass taint your balls ; taint your moose knuckle taint your moose tail.

fairy tail

YOU ARE GAY IF SOME ONE SAYS THAT TO YOU
FAIRY TAIL

hey daddy you look DELICOUS.
FAIRY TAIL

tail grind

A trick used by skate boarders

Tony Hawk had a narly tail grind during the x games

tail pony

The alternate way if saying "pony tail" usually used in joking among friends that eventually stumbled across the backwards combo of words in conversation

Whoa.. Tail pony sounds WAY better than pony tail!