A tattoo drawn right over (usually a woman's) ass crack, on the small of the back, by the tailbone.
Hey, I like your art, especially the Celtic knot ass hat.
by Big Bun May 12, 2005
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a tattoo across the lower back. Also known as a tramp stamp. Name comes from tattoo resting on top of ass like hat.
"Did you see her new tattoo?"
"Oh yeah, she got an ass hat that said her boyfriend's name."
by ksplice August 1, 2009
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a person who is so insanely stupid that they could wear their ass for a hat and not be questioned for it.
Hey bro look at that kid with the Yu-Gi-Oh backpack, he's such an Ass Hat.
by The Asshat man November 16, 2010
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Ass-hat.

Derogatory term used when someone is being an ass only in the short term and is normally an ok person.
by bigdave99 January 15, 2011
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an ass hat is someone who doesnt know any thing but talks like they know everything
that ass hat wont shut up
by dirtyd420420 March 16, 2010
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One who is clueless, moronic, and unworthy of attention. But ia a perpetual attention whore.
'Current President Obama is an absolute 'Ass-Hat'.
by abigguy July 25, 2009
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The physical body bent in a way for the anus to be worn fashionably on one's head.
Next time I see you round here boy you will be wearing that dumb ass of yours as a hat!
by ChangWang June 14, 2003
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