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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.
Justin decided that he was going to have sex with his new girlfriend Megan, but when he took off her clothes he wisely decided to back out, due to her Grand Canyon vagina.
by Tit For Twat January 18, 2007
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Apr 2 Word of the Day
Music so good it could elicit sexual arousal.
The new We Came As Romans albums is chock full of bonerjams.
by lpvitus October 28, 2009
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Big expandable pussy that can fit numerous dicks inside.
Stretched pussy
Lady: He is small
Man: Maybe the ball park was too big, even a 747 (jetplane) looks small in the Grand Canyon
by tl December 25, 2003
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A steep-sided gorge carved by the Colorado River in the State of Arizona.
Arizona is the Grand Canyon State.

The most breathtaking view you have ever seen!

by Chizhi Worm April 28, 2009
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The area between a Male's asshole and his balls
Hey man i just let my girl peg me but now the good old grand canyon is aching
by DirtyPablo March 13, 2021
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a vagina that is loose and dry

a female version of the male "chode"( a penis that is wider than it is long)
Bitch: Marty you have a chode.
Marty: Oh ya, Bitch, you have a grand canyon.
by the vagina cutter January 18, 2009
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