Watch: Fan sneaks backstage, joins McGregor's press tour entourage

Warning: Video contains coarse language

Zac Alsop is a YouTuber with a knack for sneaking into places. For his latest stunt, he succeeded not only in getting backstage at the Conor McGregor-Floyd Mayweather press tour in London, but got to brush shoulders with the Irishman.

The video begins with Alsop showing himself creating fake credentials - one guest and one promoter - and moving past various Wembley Stadium security checkpoints. Eventually, Alsop finds himself standing backstage with McGregor and walking out with him and his crew.