stinkybutt 

(Adj) Refers to a young person, usually a female, but can be either gender. Has implications of sexuality and feminine body musk as well.
Etymology: Derives from the meaning that children wear diapers, thus they are"stinky butts".

as in "You don't know nothin' your just a lil' stinkybutt",
or "You're hittin' that? She ain't nothin' but a lil' stinkybutt!"

stinkybutt by taoteqingren November 3, 2005

stinkybutt 

(adj.) used to describe young people, particularly female, but can be used to describe both genders.Takes on sexual connotations when regarding teenagers and early twenties adults.
Etymology: derives from the diaper changing language and behaviors of women to describe babies and babies anatomy.

" Hey what are you doin'messin'with that girl/boy? She's too young for you,she's just a lil' stinky butt"
"You don't know anything; you're just a little stinkybutt

stinkybutt by taoteqingren November 14, 2005

stinkybutt 

A butt with rump stank

Brett has the most odorific stinkybutt, Dani just loves to wiff a good one as she licks his bunghole.

stinkybutt by ploko September 10, 2004

StankButt 

When a person accidentally poops while mooning someone, and the smell of their own feces causes them to make the stank face.

Cheryl had diarrhea, but had the sudden urge to moon Josh. While mooning Josh, Cheryl started to release her feces, and the smell caused her to express the stank face. And Josh experienced the full effects of the StankButt.

StankButt by PRUSUS June 30, 2014

stinkbutt

When in the course of your day you took a big dump but was unable to get your ass crack as clean as it needed to be because of those lame ass little toilet paper squares in the high school bathroom or the local gas station.

Stinkbutt usually comes into play when it inhibits people from having sex until they have had a proper bath.

I wanted to make it with the chick but I knew I had a bad case of stinkbutt.

Hey, take a shower first... you have stinkbutt!

stinkbutt by Del Zeppnile December 30, 2008

stinkbottom 

when the ass gets so stinky that it can be smelled when fully clothed, usually afflicts males

"the quirper rejoiced when her stinkbottom left the seat quite fragrant"

stinkbottom by Frotkopf August 8, 2006

stinky butt

a. horrible smells or aroma coming form someones butt

Someone has a stinky butt!

stinky butt by Noble Woman December 9, 2007