WATCH: Idiots pelt the octagon with projectiles at the end of UFC Dublin

We all worried it might happen. And then it did.

A month after unhappy fans threw their beers into the BAMMA cage at the 3Arena, UFC fans did the exact same when Paddy Holohan tapped out in the main event of UFC Dublin.

#idiots pic.twitter.com/QhfsxqGfmC

— SportsJOE.ie (@SportsJOEdotie) October 24, 2015

Holohan was submitted in the second round of his first ever UFC headliner by Hawaiian prospect Louis Smolka and the "fans" voiced their unhappiness with the result.

One fan in the front row of the arena appeared to have been struck with a projectile as he was treated for medical attention while the masses filed out of the arena.

It's tremendously disappointing to see such a successful event end in absolute farce... Again.