Waistbutt 

The scientific term for the human condition of having your butt too far up your back, thus making it appear that your waist is attached to your butt. Symptoms include underwear riding up and appearing as a nappy up to the nipples.

"Dude, does Jono have a waistbutt?"
"Yeah, I think so."
"Gross."

Waistbutt by T-Diggity & D-Frazzle February 29, 2008

Whistlebutt 

(n) A sound coming from the butt; usually signifies a fart, but not always.

(v) To have a whistle come from your butt.

Emma just let such a huge whistlebutt go..

Whistlebutt by omgeverythingistakenugh August 1, 2011

whistlebutt 

(n.) usually you would use this term to refer to a fart or a particularly flatulent person.

(v) to have a whistle come from your butt (aka "rip a big one") and/or "cut the cheese"

We were sitting on the couch and Madison ripped a big one and just walked away. She walked away and Lindsey said, "what a whistlebutt!"

whistlebutt by everythingelseistakenugh1 August 5, 2011

whistlenutting

The act of anal sex performed on a decked-out rodeo clown when attempted by either man or beast (bulls, horses, etc).

There's a pretty good chance of whistlenutting when Baskets The Clown participates in Spain's Running Of The Bulls.

whistlenutting by thafritz September 2, 2017

Whistlebutt 

A really gassy person.

EEEUUUGH QUINT? WHAT A WHISTLEBUTT.

Whistlebutt by lalalalalalalalalalalalala123 August 6, 2011