have some checking up to do

have some checking up to do

To need to investigate or look into something. A: "Something about his alibi seems strange, doesn't it?" B: "Yeah, I think we have some checking up to do." I need to stop by the office real quick—I've got some checking up to do before we start our year-end audit tomorrow.
See also: check, have, up
Farlex Dictionary of Idioms.
See also:
  • (you) wanna make something of it?
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • a straw will show which way the wind blows
  • a crack at (someone or something)
  • all right
  • all for the best
  • a thing of the past
  • a slew of (something)
  • a bird in the hand