4 definitions by Kah-Kah Bum

The visible panty line that is formed on the backside of a pair of fullback (granny) panties by the gusset stitching, going from one butt cheek to the other.
Oh man, every time that Nancy bends over when in her yoga pants, you can see her bumstache!
by Kah-Kah Bum June 19, 2016
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Adjective. Occurs when you cut a fart, but instead shit yourself. Similar to a "Shart", however, a fart steak has a definite form.
I'd love to walk over and see you from my present location, but I just made a fart steak in my pants.
by Kah-Kah Bum May 20, 2009
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Occurring mostly with women, It's a phenomenon that occurs due to having a fat stomach and weak and flabby obliques muscles, often leading to a sagging appearance on the sides, but a upward bridging point under the navel, creating a "butt" appearance. Similar to a bumstache. The size of the gut butt varies based on the circumference of the individual.

It is not uncommon for those suffering from gut butt to have a stomach than their actual butt. Gut butt may be the result of an uncontrolled fupa, but it does not have to be in origin.
Man, have you seen Nancy lately? She's gotten fat, dawg! I mean, huge! Look at her fupa! She's gotten so big, she got gut butt!
by Kah-Kah Bum December 5, 2018
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The main ingredient in a Poo Dawg Milkshake. A flavorful, earthy, nutty, rich taste that pairs well with jellyfish, cheesecake, and Rumple Minze.
The woman, clearly pissed off at her boyfriend for butt-fucking her husband behind her back and in their marital bed, dumped her poo dawg milk shake over both men's head.
by Kah-Kah Bum December 5, 2018
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