An informal code of street fighting, not allowing bystanders to interfere in the fight.
Hey bitch-ass, let's square it up one-on-one in the midldle of the street!
by PGrace August 4, 2003
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1. A game where the only opponents are two people playing against each other.
2. Also know as speedballing; a mixture of cocaine and herion, most often injected.
1. Jack says to Tommy, "Let's play a game of one on one"
2. After getting out of lock-up, I said to myself, "I'm 'bout ready to head downtown and gets me a one on one!!"
by dieselgirl August 7, 2003
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BASKETBALL, where you (and only you) play against one other person
I played against Santiago in a one on one basketball game
by Home slice August 14, 2005
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a bag of heroin and coke together.
i wanted to do a speedball so i told my connect i need a "one and one" bag.
by fresh stallion April 12, 2010
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san francisco bay area slang for a combination of cocaine and heroin, aka a "speedball". a hit of tar heroin and powder cocaine sold together on the street for $10 to $20.
if youre in a san francisco neighborhood such as the mission, and you hear a guy calling out "one on oners, one on oners", hes not challenging you to a game of basketball.
by beau "oma" taylor March 14, 2010
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In paintball, when a player on one team and a player on the other team mark (shoot) each other at the same time, therfore resulting in a "one for one", one player is eliminated with another player from the opposing team.
Larry ran to bunker Steve and Steve shot Larry as Larry shot Steve. The ref couldn't tell who shot first, so he called a one for one.
by Kyle Taylor May 8, 2007
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