Mascot punches man who removed his head

If you've ever wanted to know who's inside your favourite team's mascot, let this be a lesson to you not to try and find out.

A man in a Chicago bar learnt this lesson the hard way when he snuck up behind a mascot and removed his costume head.

Big mistake.

The man, the one dressed as a bear, didn't take too kindly to having his identity revealed and proceeded to punch the other patron.

Other drinkers got in on the action and within seconds there was a massive fight between mascot and bargoers.

The men were thrown out of the bar but not before the bear was able to re-attach its head.