Sometimes, it's best to turn the other cheek. Clearly, Conor McGregor thinks otherwise.

At a bar in Dublin, McGregor is caught throwing a stiff left hand to the face of an old man after pouring shots of whiskey for the patrons. Some reports say that the old man would not drink the whiskey given to him, and that irritated McGregor enough to punch the man.

It's a bad look for the UCF fighter who has had a long year of bad publicity.