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A perfect (usually larger or well shaped) rear-end on a female.

Variant of cannon.

See cannon.
Ryan: "Yo... check out that yannon at 7 o' clock."

Anthony: "Damn... it's only business..."
by deworkkid45 April 12, 2010
uge boobs that are so yummy and cannonish that when you see them you go "nice fucking yannons"
"i scrapped all over my own chest thinking about her yannons"
by hammer September 17, 2002