keeping the dog in the bathtub

The act of fucking a woman in the pussy with your cock while simultaneaously sticking your balls in her arse, known as "keeping the dog in the bathtub" because it is as hard to pull of successfully as keeping your dog in the the bathtub while washing it.

See also plum fuck

"Hey Jeff, I was keeping the dog in the bathtub all last night with that ho, my balls still smell"

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