To deride or denigrate someone in a misogynistic way, usually in terms of their moral behavior.
"What does it say about the college coed Susan sic
Fluke, who goes before a congressional committee and essentially says that she must be paid to have sex? What does that make her? It makes her a slut, right? It makes her a prostitute. She wants to be paid to have sex."
"Hey, stop Limbaughing her already!"