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Gash heavy is a crude term used to describe the patrons of a bar. If the bar has a lot of males in it, the term sausage party might be used. When a bar or club has a lot of females of legal age the term gash heavy would be used.
Big bob: dude get here quick ! , this place is gash heavy !

scott: how was the club last night Bob ?

Big Bob: Gash heavy man !

I guess i picked a bad time for reconstructive mangina surgery ! !
by jack the wack March 22, 2010