open up someone's ass:

Or: open-up-the-ass , to perform anal-intercourse on (someone). See anal-copulation for synonyms.
See Also: bite the crank, open up the ass, part cheeks, set one's cap for, split some buns, stir chocolate, stir fudge, stir shit, turn someone on, up and down, wink somebody down, working my last gay nerve

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