Buncha is taking bunch and a and putting them together
This is a buncha crap

Your all a buncha crack pots
by Clayton November 28, 2004
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expletive; specifically when one has been offended by an institution or larger group of people. Can also be used as an exclamation, similiarly to "well I'll be darned". Also occasionally used as a plural noun.

Avid movie-goer: "can i have two tickets for 'movie' please?
Ticket seller: "I'm sorry sir, we're sold out for the next two days"
Avid movie goer: (to no one in particular) "buncha bitches!"

Tourist upon seeing the grand canyon for the first time:
"buncha bitches!"

Kid A: "How come Mike's friends are so stuck up and mean?"
Kid B: "Oh, they're a buncha bitches."
by skrotor May 09, 2006
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Expletive used in general conversation. Originated with rural Virginia carpenters in the late 80's early 90's. Similar to "fuck 'em" but more humorous.
"the homeowners said they wanted us to sweep up the saw dust before we leave at the end of the day."

"Fuck a buncha homeowners!"
by thesandwitch December 26, 2007
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A common term often used by babies and young toddlers. It could be used to describe just about anything, from toy to zombie to food.
"It's the Buncha Bunch, momma!"

"I want the Buncha Bunch!"
by otis, the May 20, 2009
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Really fucking cool dude that has major giant penis and is dating many chads and wonderful gurl.
Buncha-Bees fucks Otto Octavius
by Barley Lightfoot June 27, 2020
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