Conor McGregor fed Anthony Joshua a sip of his Forged Irish Stout just moments after the Brit brutally knocked out Robert Helenius.
AJ caught his opponent with a clubbing right hand in the seventh round to suddenly end the fight, sparking celebrations at the O2 Arena.
McGregor was one of the first people to greet Joshua at ringside, offering him a swig of his alcoholic beverage.
The win sets up a blockbuster fight with Deontay Wilder, with negotiations for a January date already underway.
