Normally, a referee should always announce each penalty he calls individually.
This sometimes results in a long monologue and endless enumerations.
Yesterday, not surprisingly, there was a lot of movement in the famous "Battle of Alberta" and in the duel between the Edmonton Oilers and the Calgary Flames, the referee in charge was clearly tired of calling penalties and he simplified the whole thing:
"Everyone in the penalty box, two minutes for roughing."
See the result, it's hilarious and making the rounds on the web right now: