A girl who gets around with guys in a given frat.
Man you don't want to hit that...she's a straight up Sigma Chi frat slut. That ass been tapped more than this keg.
by Nick D February 8, 2003
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99% of the time it is a girl trying to hard and just slutting it up, usually at frats but can also be done at other exclusive social venues.

In some extremely rare cases it can be the frat girl fratting hard with the frat kids.
"Did you see that chick at the party last night? She was totally slut fratting."
by Frat Super-star March 24, 2010
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