Not the beer!
Waiters and waitresses have a pretty difficult life. Not only does their very existence rely on the kindness of strangers (tips), but they also have to carry around heavy platters full of drinks and food they can’t afford. Remember that the next time someone drops food on you at a restaurant. They’re already being forced to pay out of their tips to cover the loss. They don’t need you going HAM on them, too!
This unfortunate fella dropped the bar’s entire selection of alcoholic beverages on one poor patron. The guy didn’t say whether the guest went full Hulk mode on him or not. He probably can’t remember after the guy punched him in the face.