If you thought an engagement to Nickleback's Chad Kroeger would finally mellow out Avril Lavigine, think again! The punk-pop princess is back and sassier than ever on her new single "Here's to Never Growing Up." The track leads off her as-yet-untitled fifth album, her first since 2011's Goodbye Lullaby.

"This is who we are / I don't think we'll ever change / They say 'Just grow up,' but they don't know us / We don't give a f-ck!" the Canadian singer declares. The song's anthemic, pop-rock sound reminds us of fun.'s "We Are Young." And like that ubiquitous No. 1 song, we can imagine the track (and especially the "woahs" in the hook) being shouted by the youth and adults who can't deny its catchiness.

Take a listen to Lavigine's new single above. What do you think of it?