A PG-rated version of WTF, or what the fuck, which can be abbreviated in a similar fashion as: "WTB."

NOTE: "what the butt" / WTB carries an alternate definition by the simple insertion of a comma, as in: "What, the butt?!" Or, "What, the booty?!" The initialized version is universally accepted as a code phrase to express, "Are you signaling me to look at that stranger's rear end?"
Another driver steals your parking space. Teeth clinched, you mutter: "WTB?!"

At the Grand Canyon, you accidentally step from the rim and into the abyss. As you're falling to your death, you scream, "What the butt?!"

Your favorite anti-antiperspirant is sold-out. With a sigh, you say, "What the butt?!" to yourself.

And for the ALTERNATE version: While walking through the mall, your buddy elbows you, then nods his head toward a woman walking just ahead. She has funky hair, but also an ass that is larger-than-life. You ask your friend, "WTB?" to mean, "What, the butt?" just to be sure he's not referring to the hair-do.
by Scary Myra July 9, 2011
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A euphamism for what the "f". Originally started by thomas pan and spreaded by long cheng
A: Dude! HAHAH! What the butt was that?
B: Hahahahha. I duno! But it was sure funny.
by Long C October 21, 2006
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When you can't remember or dont know his name.
What's his butt, the guy who owns that badass truck. I don't his name but you known who im talking about.
by luvzcoffeeee September 27, 2015
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what you call a girl when you dont know her name
Aren't you going to prom with whats-her-butt?
by Dr. MRW April 30, 2009
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The source of laughter everywhere. it makes people have fun, and kids get their daily dose of laughter. its completely predictable... but oh so funny!!! : D
The boy was sad, until the mother said "Guess what chicken butt!"
by ladygaga1234 November 27, 2009
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A famous song for Gay Men who enjoy being butt-fucked. or To be fucked in the anal area
Gay Man 1 : You wanna What What in the Butt?
Gay Man 2 : Hell yeah !!!
by Michelle Beezy January 4, 2008
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1)Song performed by a glitzy flamboyant man
2)Common phrase used by Butters on South Park
I said what what in the butt!
*man dancing suggestively*
by Earl Annie Edna July 22, 2008
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