VIDEO : Avril Lavigne Defends Ex After Mark Zuckerberg Disses Nickelback

News Don't mess with her ex. Avril Lavigne publicly defended her estranged husband, Chad Kroeger , and his band, Nickelback, on Thursday, December 22, after Facebook's Mark Zuckerberg joked about them in a new video. Don't mess with her ex. Avril Lavigne publicly defended her estranged husband, Chad Kroeger , and his band, Nickelback, on Thursday, December 22, after Facebook's Mark Zuckerberg joked about them in a new video.