Denise Truscello, WireImage
Oh yes he did! The Sum 41 rocker slapped on a pink-and-green-streaked blonde wig and signature Avril hoodie, and impersonated his ex-wife at a Halloween party. A pal of Deryck's took on Chad, wearing a Jack Daniels printed T-shirt, platinum wig and faux facial hair. The two posed for an amazing photo, which has made it's way onto perezhilton.com.
See the photo here!