When a person, either real or fictional, turns their baseball cap through 180 degrees so that the peak faces backwards to physically represent that they have switched into "go-time" mode.
I didn't think that nigga was serious til he southbilled that motherfucker.
by RogoR1 May 21, 2009
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Term that refers to when a person, either real or fictional, turns their baseball cap through 180 degrees so that the peak faces backwards to physically represent that they have switched into "go-time" mode.

i.e Ash Ketchum from Pokemon
I didn't think that nigga was serious til he southbilled that motherfucker
by UpYourZ May 21, 2009
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When a person, either real or fictional, turns their baseball cap through 180 degrees so that the peak faces backwards to physically represent that they have switched into "go-time" mode.
I didn't think that nigga was serious til he southbilled that motherfucker.
by Silva2022 May 21, 2009
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Verb: to turn one's baseball cap 180 degrees, so that the bill is in the back, thereby showing how serious one is about whatever they are about to do.
"I thought that nigga was bluffin' till he southbilled on me. Nigga pulls a southbill, you KNOW shit be goin' down."

~The Dutchess of York
by PhilosophicalCAT May 21, 2009
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When a person, either real or fictional, turns their baseball cap through 180 degrees so that the peak faces backwards to physically represent that they have switched into "go-time" mode.
I knew some shit was about to go down when Ash southbilled his hat
by BillyTheMudkip May 21, 2009
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When a person, either real or fictional, turns their baseball cap through 180 degrees so that the peak faces backwards to physically represent that they have switched into "go-time" mode.
In episode 243 of Pokémon, Ash ketchum is challenged to a battle by long time rival Gary Oak. In acceptance of the challenge, Ash "Southbilled" by rotating his baseball cap 180 degrees suggesting that it was "go-time."
by anonymooserr May 21, 2009
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When a person, either real or fictional, turns their baseball cap through 180 degrees so that the peak faces backwards to physically represent that they have switched into "go-time" mode.
I didn't think that nigga was serious till he southbilled that motherfucker.
by SjHawkins May 21, 2009
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