|deadmau5 at the Grammys|
In a funny attempt to "get back" at Skrillex, and seemingly proving he knew just how much attention Skrillex would get over himself, deadmau5 wore a plain black shirt with Skrillex's personal number in bold white lettering, with the text below: "u mad bro?"
Oh, deadmau5, you crazy dude. Skrillex laughed it off on twitter with the following message:
Just keep it classy, you two. ;]