This one tops all-time douchebag moves. Conor McGregor punches an older man in the head for purportedly refusing to take a shot of his Proper Twelve Whiskey. TMZ obtained footage of the incident which can be seen below.

The attack occurred at the Marble Arch Pub in Dublin on April 6. Conor walked in and lined up cups for bar patrons, looking to buy a round of his Proper Twelve for everyone.

The problems started when the older gentleman opted out. Conor placed a cup in front of him twice and he still refused. It’s unclear if words were exchanged between the two, but what is clear is that Conor McGregor punches an old man in the side of the head without physical provocation.

Two people immediately grabbed McGregor and pulled him out of the bar. The incident was reported to police, who announced back in April they’d opened an investigation.

It’s unclear if that’s still active, but there are no reports Conor was ever charged — even though cops have reportedly seen this video.