To be under the influence of meth or a similar substance.
Damn,man!I saw that fool Kyle the other day,homie....That fool was on a hot one!
by LbcSlim1 December 20, 2007
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To recieve an "F." This includes: on a test, paper, or for a final class grade.
"Jeff How'd you do on that test?" "Man, I got a hot one!"
by Baybay boo June 04, 2006
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Hot one is the new slang term for a one dollar bill used mainly by African Americans(A.K.A. Blacks)
Black Guy 1: yo my nig wanna bounce ova to Roscos on 5th street and nab some chicken?
Black Guy 2: Naw dogg unless u can shoot me a hot one.

Black Guy: Yo dogg can i borrow a hot one?
White Guy: What???
Black guy: let me rephrase that...Excuse me friend may i borrow a dollar please?
White Guy: Sure why didnt you say so?
by DJ_JD August 26, 2007
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suddenly coming to the brink of having a bowel movement with immediate urgency
I quickly ran out of the Board meeting, down the hall to the closest bathroom as I had a hot one in the chamber which couldn't be contained for a second longer.
by C-Dizzle4Shizzle September 24, 2008
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caught with a gun that's been used to murder or with a body
Don't want to get caught with a hot one in your trunk
by Downerz June 05, 2007
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