1 definition by T-Diggity & D-Frazzle

Top Definition
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."
by T-Diggity & D-Frazzle February 29, 2008

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