Well, I thought "shredding" is when someone plays their electric so hard and fast it shreds their hand, and there'd be blood flying all over the stage and the front row of the audience where the young ladies sit and scream, and one of them gets covered with James Hetfields blood and she goes home screaming to her Mom and Dad that she will never again wash her face and hair, but next day at school, she's forgotten all ABOUT that and she and her friends scrape the dried blood off the face and hair, put it into a test tube to see if they can clone ol' James. THAT"S what I thought "shredding" meant.
LOL! This is the best definition I have ever read.
I think Bill needs to start an online slang dictionary!