Buttfaux

Any enhancement worn by a women to enhance an underdeveloped or sagging rear end.

The girl at the club with the big booty had her rear pumped up in her jeans with the buttfaux she was wearing.

Buttfaux by Anal Czar October 4, 2010

buttfuxx 

Another word for anal intercourse.
I.e. the insertion of the erect penis into the rectum through the anus.

Buttfuxx gives a special feeling of greater power to some people while penetrating.
It can also be considered as an act of (anal)domination.

1. Horny stud: "Hey girl, wanna buttfuxx?
Straight into your asshole?"
Frigid girl: "Eeooohw, you pervert leave me alone!"

2. Person 1: "Did you know that 2 out of 5 women
are addicted to buttfuxx?"
Person 2: "Oh, really? I guess I should deliver
some hard buttfuxx to my wife then and if
she's lucky I'll even use anal-lubricant
this time.

buttfuxx by Dr. Magoo October 2, 2006

buttfux 

Slang for the phrase "butt fuck." Or the act of "Butt fucking."

Taking it "up the butt" or anally.

Done in prison.
Texting term.

Jamal buttfux his male sexual partner John.
Omg. did you two buttfux?

buttfux by Nayy. December 6, 2007