AWWW! HAS HE GOT HIS NAME STITCHED INTO HIS BOILERSUIT TOO?

This taken from (I could let you guess...) No Rock N Roll Fun Blog:

THE SCREAMING QUEEN
We'd never really thought very much of anything Slipknot did was other than a pose, but at least we thought Corey Taylor's screams came from his heart. It turns out, though, that Taylor uses a screaming coach, called Melissa Cross.

She apparently sees nothing ironic in the concept of tutoring your scream:

Like a lot of music, there's a movement that occurs in the underground and it's a bunch of kids uniting under the idealism that music spawns. In the '80s there was this aggressive music because kids were pent up, and they needed to get it out. So the ultimate expression is to scream your guts out.

... but hey, if you're going to do some primal screaming, make sure you go to scream camp first so you can be properly organised.

All together now- "The singer out of Slipknot went to Rome to see the Pope, the singe..."