Like one is on the line of sight or line of target but not about weapons.

This sentence:

Don't sit there, you're on the _______ .

Don't sit there, you're _______ .

Suppose a death ray of sunlight passes through a hole in the wall to where one is seated.

  • 1
    a sitting duck?
    – JMP
    Commented Nov 19, 2017 at 8:56
  • sitting duck implies a sentient enemy, IMO.
    – TimR
    Commented Nov 19, 2017 at 11:28

2 Answers 2


Any of these would work: you're a sitting duck, you're in the danger zone, you're at risk, you're on the edge


Other possibilities:

That's an exposed position. Don't sit there.

You're vulnerable to sunlight there. Move to another place.

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