[CobraDan]

Four women were chatting in the locker room, when one of them mentioned the fact that while there were numerous terms for male masturbation jerking off, wanking, spanking the monkey, and so on there weren't any common terms for female masturbation.
"I've always called it 'jilling off'," said one of the women.
"But that's just a feminization of 'jacking off,'" said the first.
"You're right," said another. "We don't seem to have any slang terms of our own for it."
The fourth woman snorted. "After fourteen years of marriage, there's only one thing I call it."
"What's that?"
"Finishing the job."