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A shit smear on your asscrack or in your drawers that includes a non-shit chunk. Said chunk can consist of chile seeds, any tree nut, undigested items (including paper, metal and wood), Capt'n Crunch and more. This does not include klingons.
I hate doing laundry because dad always has chumpstains in his underpants.

Dude, I went to eat Erin's pussy and the bitch had a gnar chumpstain! She must wipe from back to front.
by archscientist March 02, 2010
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Apr 20 Word of the Day
A term used to reference cannabis/marijuana/weed.
This Jazz Cabbage got me zooted. Jazz Cabbage is less harmful than Squares. Iā€™m smoking that Jazz Cabbage boy.
by Gypsiehood97 December 30, 2017
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2
A person viewed as a loser or lame.
"That chump stain is a 24 year old virgin"
by DaveNutz August 22, 2003
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