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Usual term for taking a dump, then wiping your ass to find that nothing is on the toilet paper.
"Hey man, I'm sorry I wasted so much of your toilet paper, I wasn't sure if I had an invisi-shit or if I wasn't wiping properly."

"...You're buying me more Charmin Ultra then."
by Inyourendo^_^ November 26, 2008
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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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