Whilst fucking a girl in the anus you penetrate the membrane between the anus and the vagina and impregnate that bitch!
I was fucking Tashiqua in the ass last night and this morning she told me that I was butt chunking her, now I need to pay for the abortion.
by chunker222 January 27, 2009
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A brown poopy substance containing large particles of waiste.
I pooped brown butt chunks on my turtle in the toilet.
by Benjamin April 29, 2003
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a rocky brown substance, similar to crystalised ginger, that once expelled from the anus causes a sharp pain in the recipient's eye
by Anonymous June 11, 2003
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When someone "boofs" meth into their butt. The chunk of meth becomes a butt chunk.
Matt really got paranoid after she hit him with a butt chunk.

We aren't going to sit here and do the reach-around butt chunk
by Malice Eugene February 14, 2020
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