What is Red Bum?
1.
When you are having sex and you keep smacking your partners ass so that it turns red like a baboons.
I was having sex with Taylor and she kept telling me to smack her ass, she went to pee when we finished and she had massive case of red bum!
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Your middle finger. Usually refers to the one on the left hand so it can be displayed out the driver's side window to comment on an..