Meaning: Be alert, be watchful (example 1, example 2)
Rewrite 1: eyes open!
Rewrite 2: ears piqued!
Rewrite 3: blinders off!
Rewrite 4: on-off switches "on"!
Rewrite 5: plugs in the wall!
Comment: This is generally about keeping alert, being aware, but I thought it might also be about watching out for things we might overlook.
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