She/He was a 10 at 2. This means the girl/guy you would have never talked to at the begining of the night has made it into your life by the time the bar closes at 2am. By rating her on a scale of 1-10 due to the alchol she/he has became a 10 at 2.
Guy 1: Hey man did you see that girl i hooked up with on saturday?
Guy2: Yeah man saw her at the begining of the night, She must have been a 10 at 2.
Guy1: Yeah lets just keep her a secret.