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1.
A really slutty girl, or one who likes to take it up the butt. Or one whos really easy to get with. (Sometimes used in verb form)
"Did you get with that skank last night?"
"Yeah, i didnt need to do much, she was a total conca"
or
"I did the Conca ALL night last night!"
by Jess-nik October 09, 2011