Top definition
Gunkem (also spelt Gunkum) is the under-part of the butt cheek that falls out of the bottom of short shorts .this is common in young women during the heat of summer . 'the side boob of butts"
" aye bro, check out that fine chick in the shorts, with the nice ass..the gunkem is killer too!"
by Al-Tr3boy June 06, 2016
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