An act of dancing where there are no rules. Anything goes. It usually entails getting low, making ridiculous faces, and falling flat on your face. Strobe lights contribute to the act of tearing as well as Britney Spears.
One can only say they shredded rug if they have the battle wounds to prove it such as swollen/tender feet, blisters, or bruises.
Boy1: Hey did you see Kristin dancing last night? She was intense.
Boy2: So wasn't dancing! She was absolutly shredding rug! Girl was intense!