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It's when you have a phat ass

i.e ass = trunk

Trunk is phat
Phat ass , phat trunk

Is a trunk full of ass
by Shashay March 24, 2014
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Jul 27 Word of the Day
the whale tail is the shape formed when a g-string rides up high over a womans trousers
oh my god look at that butt, her whale tail is showing so high!
by garv November 10, 2003
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