3
Typically used by people who want to find a creative way to use the word "butt" in an insult that isn't "butthead" or "butthole."

Not literally referring to a chunk of a butt.
Andy ate the last oreo again. God, he's such a buttchunk.
by Amaterasu- July 20, 2011
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4
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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6
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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7
1.someone absolutely annoying, bothersome
2. A little chunk of poo with beans in it
1. OMG evan is such a buttchunk.
2. You should have seen this gross buttchunk i left in the toilet
by AaronLeechang September 03, 2007
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