Just add this to the pile of stupid stuff Conor McGregor has done. McGregor offered to buy all of the patrons in an Irish bar but was refused by one man, which McGregor didn't take kindly to. Of course the only sensible thing to do is punch the guy right? Seems like a normal Thursday over there to be honest though. Luckily he had a few guys to "hold him back" before he did more stupid stuff, but it looks like the old man took the punch like a champ!