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 12, 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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Chunks of shit, A.K.A. another expression used for shit.
"You mind if I lay some butt chunks in this 'ere toilet bowl?" Asked Mr Thomas Newton
by duckthemannn October 13, 2021
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