I don't follow (you)

I don't follow (you)

I am confused by or unable to understand what you just said. Sorry, I don't follow you—what exactly do you want me to do next? A: "Thus, we see that the integer is equal to its additive inverse. Understand?" B: "No, I'm afraid I don't follow."
See also: follow
Farlex Dictionary of Idioms.
See also:
  • lose the drift (of something)
  • lose the drift/thread of something
  • I don't understand
  • I don't understand (it)
  • (one) doesn't know which way is up or down
  • lose the thread
  • lose one's head, to
  • I can't understand (it)
  • punch-drunk
  • punchy