Is the one time sexual equivalent of playing Would You Rather for two. Would You Rather creates two scenarios and explain why you would or would not rather do it. This version is about the two of you acting on your sexual desires or curiosity about the other person just once without any questions asked, repercussions and no judgement passed. You both agree beforehand to never talk about your one time hookup and to go your separate ways afterwards.
Elliot: Cal, what did you do last night?
Cal: I invited Tracey over for drinks last night and we played One And Done(OAD).
Elliot: You did explain the rules of the game and she was cool with it?
Cal: Yeah I explained the rules. She said she wasn’t looking for anything long term and was all in.
To sleep with someone once and that's it. Usually done to someone you're just not that into or has 2+ brat kids you can't afford or don't want to take care of. A one night stand, same as "hit it and quit it" and "fuck and chuck." Named after the NBA rule.
George Clooney and John Mayer are famous one and doner's.
Ted:"Man I wish I could go out tonight and pick up some strange but the wife is up waiting with the kids."
Bill:"Screw all the drama, taking care of kids, expense and sexual monotony a relationship is..I'm a one and done kind of guy!"