A Guy Prevented His Friend from Driving Drunk . . . by Punching Him in the Face and Putting Him in a Sleeper Hold 

We all know you shouldn't let your friends drive drunk, but it's another thing actually keeping them out of the driver's seat.  If you're up for doing whatever it takes, listen up.
There's a video on Break.com of some drunk idiot insisting he's okay to drive . . . even with his DAUGHTER in the car.
And after he keeps refusing a ride, one of his friends CLOCKS HIM, then puts him in a SLEEPER HOLD.  The whole time, the friend keeps telling him he's doing it for his own good.

http://www.break.com/index/friends-dont-let-friends-drink-and-drive-2285522