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1.
A combination of booty dip and titty dip. A girl with a nice booty and an equally nice set of titties.
(At the pool)

Garrett - "Damn Adem do you see that girl with that fat ass and nice set of titties?"
Adem - "Yea, that bootitty dip must be an alien, because her ass and titties are out of this world."
by A&T's November 11, 2010