This club bouncer did not appreciate getting sucker punched and he retaliated with a move that could have killed his opponent.
It looked like that bouncer dropped him straight on his head and that drunk was lucky to walk away from it or, for that matter, to walk again. If the angle on his neck were a little different, he could have been hurt extremely badly. Maybe he should think about that the next time he’s tempted to swing on someone for not letting him into a club.