1 definition by oystermaster

A sexual act in which a man and woman scissor legs while the man rubs his anus on the compliant female's vagina in a scissored position until climax is attained. Flatulence and defecation are usually involved as enhancements to the act.
Obsessed with filthy sex, Joanna can only climax during an ugly-oyster.
by oystermaster July 2, 2013
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