L4D Tanks singing "YOU are a PIRATE!!", and other Special Infected singers.

I just thought this video was so damn hilarious that I had to share it
Basically, the guy who recorded this, Cricken, hacked a public server on Left4Dead {PC version, of course}.
He then did things like spawning active pipe-bombs all around the survivors, or making everyone Tanks, silly stuff like that.
While he was doing this, one of his friends was playing music through his mike, which only enhanced the funny.
I mean, just watch the clip that starts at around 0:30 ;

 

I lol'd. Hard. Most of all at the part where everyone was spawning as a Tank and only Bill managed to get into the elevator. He thinks he made it, then Cricken noclips into the elevator with him.
"SON OF A B—"

 

The Sequel

It's more of the same, but this time on Left4Dead 2 ;

 

HAHA!!! The music is just genius! Hilarous video.