by Jamal silver December 25, 2010

A woman (or man) with whom the person in question would be willing to have sexual intercourse. See binary system.
Two men walk down the street and see a hot woman walking in the opposite direction:
Guy 1: "One."
Guy 2: "Hell yeah that's a one!"
Guy 1: "One."
Guy 2: "Hell yeah that's a one!"
by gc123 December 30, 2008

by Kevin MacDougall April 18, 2008

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.
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!!"
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

by Home slice September 13, 2005

by PGrace August 4, 2003

by fresh stallion April 12, 2010
