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1 definition by FAOTHEFiD

 
1.
Girl on Boy action when the girl places the mans penis between her mountanious boobs and slides up and down his body.
Yo bro i got a sweet mountainvalley from that bitch after my lax games

Yo bro did you take advantage of her and mountainvalley the milk out of her
by FAOTHEFiD December 22, 2011