"I was messing around on the guitar trying to learn that and then I kind of messed up the progression and I played it incorrectly," he continued, "And then I was like, ‘That sounds kind of cool,’ and that was the basis for the opening riff of the song. It was me trying to learn 'J.A.R.' on guitar and messing it up and coming up with something that I liked that was different than that."
Hoppus' love for "J.A.R." also led to a bit of an embarrassing moment with Green Day frontman Billie Joe Armstong while they were on tour together. "I was in Green Day’s dressing room on the first night of the show, talking with Billie Joe, just like, ‘Hey, you know, I’m a big fan and I’ve been influenced by your band’ and stuff, and, ‘Man, I fucking love 'J.A.R.' so much, that song is so good. I think that’s your best song, and I really am a fan.’ And he goes, ‘Yeah, that’s cool. Mike Dirnt wrote that one. That’s the only one of our songs that he wrote.’"
"I did not know that," DeMakes responded, laughing.
"I didn’t know it either!" Hoppus said. "I was like, ‘Oh, I love all your songs a lot.’"
Listen to the full podcast below, with the story beginning at around the 18:45 mark.