stand at

To step or stand upright in an aggressive but somewhat understated manner in an effort to intimidate or weird out a selected stranger, usually in public.

Man in bar: You see that guy over here? he's totally standin' at me.
Man's friend: He wanna start somethin'?
Man: Fuck you! (pushes man who was standing at him).

I was in the subway yesterday and some creepy homeless man stood at me for like 20 minutes! I didn't know what he wanted

It looked like he was coming up to the bar to get a drink, but I knew he was just coming to stand at me.

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