Dirty Math

To stick your finger into a friend's anus in an attempt to make him ejaculate so that you can have your turn.

When you're twos up on a girl and your mate is going on forever you might execute the Dirty Math.

Oh man I was having the best sex of my life with a filthy hookup last night until Phil pulled a Dirty Math on me. He couldn't wait to chow down on her creampie.

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Frot

An activity associated with being a member of a group of deviants. Specifically used to entice men into a group with the promise of objects to hump or penises to rub.

Has also been associated with less reputable religious cults and secret societies.

I knew The Zephels really wanted me when they offered to frot me if I joined.

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