UFC Lightweight Champion Conor McGregor broke the rules during Friday’s press conference.
This past week, McGregor and Floyd “Money” Mayweather went on a world press tour to promote their highly anticipated boxing match next month in Las Vegas.
On Friday, the final press conference took place in London. McGregor waited until the last day to put his hands on the boxing legend.
While Mayweather was sitting down, McGregor walked behind him and rubbed his head. The UFC champion then went on to mock Mayweather for having a small head.
In the video above, you can watch the entire incident take place.
This week, Mayweather and McGregor held press conferences in Los Angeles, Toronto, Brooklyn, and London in four consecutive days.
After two years of being retired, Mayweather is returning to the sport of boxing to fight McGregor, who is making his professional boxing debut.
Mayweather vs. McGregor will take place Saturday, August 26 at the T-Mobile Arena in Las Vegas.