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when someones head is so small their eye brow line meets their hair line.
Gawd Damn... Fucking niggas forehead so small.. Its a onehead
by AdurpaDoo August 30, 2009
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Jul 28 Word of the Day
to sport a boner, fly the sail at full mass, rock hard, etc.
"I had a lot of cartoon characters that used to get me sexually aroused as a kid... The female reindeer from the Rudolph claymation series, when I was in preschool, I used to be bricked up watching that shit." -Jack Harlow
by real_philly February 11, 2020
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lmao u just threw ur keys in ur locked car u one head
by Sir Bebe April 26, 2021
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Since a fivehead is extra forehead on top of a forehead, a onehead is a quarter of a full forehead. A forehead that rests somewhere at or just above the eyebrows. If the one who has a onehead shaves their head and has protuding round ears, they look like a baby chimpanzee.
That guy has a onehead, not a forehead.
by Solid Mantis April 03, 2021
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