would as soon do as look at you
would (just) as soon (do something) as look at (one)
Would desire or be very willing to do something harmful or malicious to one. Don't go messing with that guy, Jake—he'd as soon kill you as look at you. I really hate that braggart. I would as soon knock his block off as look at him.
would as soon do something as look at you
Rur. would be eager to do something harmful as simply look at you. He was a mean so-and-so who would as soon shoot you as look at you. He'd as soon pick a fight as look at you.