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1.One who avoids the revealing of their true appearance on internet networking sites.
examples being those who wear sunglasses that cover over half their face. Pictures taken in the mirror that show a bright flash dominating the photo. Those who use a picture of themselves with their hottest friend so it is impossible to tell which they is. there are many more examples.

dat girl is a hider! I been lookin' at her facebook for 10 minutes i still don't know who she is. Mang, they is hidin' behind them big ass glasses, u kno what i say, i got too much pride to hide!
by jeremias December 12, 2006
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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2
someone who pretends to sign off aim by closing the eye, but stays on for whatever reason, talking to ppl who know about their hidingness
ann yuan is a dirty hider, who diea a lot
by asianman April 22, 2004
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3
A common greeting between those of lower IQ levels. Originated on an SNL skit with Will Forte, Bill Hader, and Lebron James called "The Lyle Cane Show."
Lyle: "Hi der. Welcome to the Lyle Cane Show on Black ET. Welcome my first guest, Tim. Hi der!"

Tim: "Hi der!"
by dtrain4606 October 28, 2007
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4
a turd that comes out of ur ass so fast it goes right down the drain where u cant see it to be proud of it
that damn hider, i new i had a good one!!!
by WhatEver69 July 26, 2004
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