gunching is when you felch (anal sex then suck cum out of butthole) then make out with it like its gum.
Jordan and Henry gunch all day!

guncher
by you gunch hard November 17, 2010
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The crevice created where the buttock meets the top of the thigh.
There is toilet paper stuck in Shana's guncher.
by Holly Minich March 1, 2004
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Scrape from a fall often from riding skateboards in the early 80's.
I fell in the halfpipe and have a huge guncher on my knee.
I gunched my elbow.
by Dax Bedlamb June 30, 2020
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