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Short for "hair diaper". The condition of the human body where the pubic hair starts at the navel, travels underneath the nether regions uniterrupted to the small of the back. Also known as a hairper.
I was at the gym the other day and this old guy came out of the shower wearing nothing but his hiaper! I couldn't even tell if it was a dude!
by Jacobazzi Lambrusco August 12, 2010
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