A Once Over
When you flick your eyes from the top of someone’s head all the way down to their shoes, like you’re doing a body count and you’re not even sure if they’re worth it.
'I did my once over on him in the grocery store. He was just another guy in line.'
'She did her once over on me from across the room. I knew I looked good.'
'He did his once over on me in the elevator. I was flattered.'