A hook up with the sole purpose of raising one's self-esteem.

A person (usually a girl) trying to fuck someone so that they can reassure themselves that that look good/are still skinny enough for others to desire them.
"Did you hook up with John last night?"
"Yeah, but it was just a skinny fuck. It didn't mean anything and now I feel better knowing at least John still wants to fuck me."
by H. Sid Westport May 19, 2009
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