5 Seconds of Summer think it's "disrespectful" to mess up hotel rooms whilst on tour.
The pop-punk band - made up of Ashton Irwin, Luke Hemmings, Michael Clifford and Calum Hood - insist they are very un-rock'n'roll and are often napping or out go-karting when they're not on stage.
Guitarist Michael told the Daily Mirror newspaper: "What's the point of throwing a TV out the window if SpongeBob Squarepants could be on and we could be watching it? Or Geordie Shore? What a waste.
"I think it's disrespectful to trash hotel rooms. The most rock and roll thing about us is how we sound."
The band's self-titled debut album hit number one on iTunes in 69 different countries after its release and is set to reach the top spot in the UK Albums Chart this week.
Michael, 18, insist their pre-show rituals don't involve drinking or anything outrageous and the lads just enjoy chilling out before their concerts.
He explained: "We brush our teeth, listen to some music - either heavy metal or some savage R 'n' B. We like to jump around to get all pumped up. We don't really have after-parties either. We're so busy, we barely get time to sleep. We nap whenever we can - we're always tired. We like go-karting a lot too."
Although he's not yet legal to drink, singer Luke, 17, thinks artists shouldn't enjoy a tipple before they go on stage because it gives people a bad impression.
He said: "You should never drink before you go on stage. That's a very bad idea if you want to give your all to your fans. Maybe when we're 50, on the reunion tour."
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