Top Definition
A sexual act involving the insertion of a Mars bar into the vagina and/or anus, then having your partner eat it out of said orrifice.
John: Hey Tom my girl did the craziest thing the other day. She stuffed a mars bar in her pussy and had me eat it out of her.
Tom: Woah cool! I didn't think she would be into xenofelching.
by General Information August 05, 2010

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