The word used to describe what happened last night. But it doesnt mean anything other than making out, fingering, and handjob giving/receiving. If you foxed someone or fox someone that means that you(if you were a guy) made out with her and fingered her and she gave you a handjob.
Guy One: What did you and Alex do last night after the party?
Guy Two: We foxed.
Guy Four point Five: AWWWW SAH-WEET MAN!!!! DUDE ID BONE HER TOO!!!
Guy Two: Okay....?
Guy One: Dude wtf? Where did he come from?
Guy Two: I dont know. I thought you locked him in the closet.
Guy One: I guess he came out of the closet.
Guy Two: AWW sweet joke man!........fag.........