sack up with (one)

sack up with (one)

slang To have sexual relations with one. A: "I heard that Tom has been sacking up with some 30-year-old accountant from his old law firm." B: "Wow, he hasn't been divorced for longer than a month!" I can't believe you sacked up with your ex-boyfriend again.
See also: sack, up
Farlex Dictionary of Idioms.
See also:
  • make old bones
  • a piece of old tackie
  • bolt bucket
  • an old one
  • old cobber
  • geezer
  • be (as) old as the hills
  • any old
  • mossback
  • bucket of bolts