Top Definition
Man Canyon- (man can-yin) (n) A crevice or canyon (such as the Grand Canyon) in a male specimen
Russel bought a clean roll of toilet paper to keep his man canyon tidy

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Holy Moly Judy, that man canyon is deep!

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DAAAAAAAAAAAAAAAAAAAAAAAamn, that man canyon is a one hairy jawn!
by Alex Jacobs and Zach Bowden August 21, 2007
2 more definitions
A man cave so expansive that 'cave' just does not do it proper justice.
Larry's 1400 sq ft man cave has a fully outfitted work out room, air hockey, pool table, poker table, dart board, 25' HD projection screen, Wii and a beer fridge. I think it has made the leap from man cave to Man Canyon!
by mnamna1 March 15, 2011
The canyon that exists between the pectoral muscles of a male. The depth of the canyon is proportional to the amount of dominance that the male holds.
Hans: "How deep is your man canyon Jake?"

Jake: "I don't want to talk about that anymore, size doesn't even matter"

Hans: "Dude, you don't even have a man canyon, do you?"

Jake: "Don't tell my parents, please dude"
by Bigboiyolofish March 06, 2014

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