cop off with (one)

cop off with (one)

1. slang To kiss passionately and at length with one, especially during a chance social encounter. Primarily heard in UK. I saw Mike copping off with some random girl in a corner of the bar, so I took a picture and sent it to his girlfriend.
2. vulgar slang To have sex with one. Primarily heard in UK. I wouldn't cop off with your roommate if I were you.
See also: cop, off
Farlex Dictionary of Idioms.
See also:
  • suck face
  • swap spit(s)
  • swap spits
  • kiss something goodbye
  • kiss something good-bye
  • kiss (someone or something) goodbye
  • kiss goodbye
  • kiss good-bye
  • kiss goodbye to something
  • goodby