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1.
to skull fuck someone
I was down that the park last night and some crack head asked me for $2. I told her if I could Skulch her I'd give her the dough.
by IRONDOG442 August 25, 2008
 
2.
The term originates out of Lockport, IL. It can be used as a synonym for grundle.
A darker colored rag is prefered for washing the ass and skulch region.
by chickenfoot June 29, 2005