The sequel to Brokeback Mountain. Cornhole Canyon is the second installment in a whole saga of butt-fucking cowboys.

Also, a great name for gay porn that is unrelated to Brokeback Mountain.

Man Canyon- (man can-yin) (n) A crevice or canyon (such as the Grand Canyon) in a male specimen

A small town overrun by cops that have nothing better to do than to harass innocent teenagers trying to have fun. Instead of helping Vallejo where actual crime is happening

The Grand Canyon refers to a girl who is extremely blown out. The relevence of this term is that, just like the real Grand Canyon, the chick's vagina is forever stretched for for a huge distance. Girls with Grand Canyon twats should be avoided, as they have seen more than their fair share of dicks and probably contain numerous STDs.

When you head canon something so far fetched it becomes illogical and impossible to believe.

Big expandable pussy that can fit numerous dicks inside.
Stretched pussy

A whip canyon is a game where a guy puts whip cream in a girls butt crack and pussy and uses his penis to fling it out while the girl tries to catch it in her mouth.