Justin Bieber Shotgunning Beer in Las Vegas

Justin Bieber is loving life as an adult & appeared in a celebratory mood as he partied with buddies over the weekend. Bieber clearly never had the time or training to master shotgunning a beer. “I lost but I didn’t go to college”, he captioned the video above.

Bieber was in Vegas to cheer on his friend, undefeated boxer Floyd Mayweather, in the figher’s bout against Andre Berto at the MGM Grand Garden Arena on Saturday night.

It’s always amusing when you see a celebrity get shut down by security like that, but it’s a little funnier when it happens to Justin Bieber.

While there, the Biebs took time out to take part in a competition of his own. Bieber had some trouble shotgunning his can of Corona. As Gossip Cop has reported, Bieber and Mayweather are very good friends, with the singer having twice escorted the boxing champ to the ring before a fight.

In an Instagram caption Bieber told fans not to worry about his loss in the beer drinking contest.