Songfacts®:

• 5SoS guitarist Michael Clifford and drummer Ashton Irwin wrote this song with Roy Stride, who is the vocalist of Scouting for Girls. Stride's pop-rock group have had several Top 10 hits in their native UK, including "Elvis Ain't Dead," "Heartbeat" and the chart-topping "This Ain't A Love Song."
• Speaking about the song, Michael said: "It was one of the first songs that me and Ashton wrote. We wrote it with a guy called Roy Stride, he's from Scouting for Girls, a guy called Josh Wilkinson and a guy called George Tizzard and... Rick Astley. Roy came to us with the lyric 'good girls are bad girls that haven't been caught' and at first it didn't strike to me."
  
  Ashton added: "It didn't strike to him, but I was like 'Roy, you're a genius.'"
• Ashton drew the artwork for the song's single release whilst backstage at The Tonight Show Starring Jimmy Fallon.
• The song's music video was shot in a disused prison in Los Angeles and finds the guys invading a reform school, where they search for "good girls being bad."