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The sexual act where one defecates on a partner's face, then proceeds to rub said faecal matter into the face with a back and forth motion of the buttocks. The buttock cleavage should form a groove into which the nose slots, providing a guide for this motion.

This was allegedly the act to which Meatloaf referred to in the iconic song lyric: "I would do anything for love, but I won't do that".
Jim: "Hey Randy, you know what Meatloaf wouldn't do for love?"

Randy: "Don't tell me, galleoning?"
by SirReginald January 13, 2011
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