Earlier this month, All Time Low hit London's O2 Arena as part of their epic'Back To The Future Hearts' tour and while they were soundchecking, MTV snuck backstage to probe band members Alex Gaskarth and Jack Barakatabout life on tour.

We find out who's really proud of their body, who spends the most time naked on the tour bus and who once had to play a show with a gaping big hole in their pants.

Life's big questions...