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1.
The undesirable reminisce left behind after a girl has allowed multiple guys to have sex with her in one night or in any period of time she goes without showering.
Did you hear about how she let those guys run a train on her? she has major slut crust!

That nasty hoe hasn't washed in weeks, I cant even imagine all of the slut crust she has collected
by MiAm0r May 13, 2010