slutty cow, could mean an actual cow that is slutty or commonly used as two insults in one. Slut and a cow. Therefore being double mean.
Alan: Hey, that Louise is such a slcow, she munched off the whole football team last week!

Ian: I know, she is the biggest slcow I've ever seen! Still would though.

Alan: Yeh, true
by Pete616 September 24, 2010
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