If they hit me at speed there's nothing I could do whether I argued or not, I'd be laid out before I knew what happened. If they stopped, then hit me, that wouldn't be a bad collision to take, they'd only get up to a few mph in the few feet in front of me even if they hammered the throttle. I'd slide off the hood and get their plates and then they'd be in jail and I would walk into the courtroom with a neck brace and get my payout.
I'd be getting that anyway when I get old, or I could be arthritic and also riding off the dividends of my massive settlement I had in my youth which I promptly would throw in the market.
This works until you do it to a driver who has had a really bad day and demonstrates that the walk sign isn't a force field.
Yes, he'll probably go to jail for vehicular manslaughter, but that doesn't help you.