"Pork" as a verb

Does anyone know the origins of using the work "pork" as a verb. For example asking the question:

Did you pork her?

I've more often heard "He borked her" than "He porked her." In an interesting episode of "Buffy the Vampire Slayer," Buffy was accused of having let a vampire boink her. But, no, I can't answer the question. SS

Replies