Dave Grohl has a confession to make: at the end of Foo Fighters’ lengthy tours, he feels like calling it quits. Worried? Don’t be. Grohl admitted to AC/DC singer Brian Johnson that “it’s kind of a running joke.”

In a new Sky Arts documentary, appropriately titled Brian Johnson Meets Dave Grohl that airs tonight (Sept. 17), NME reports that the longtime touring legends shared stories of life on the road, with the former Nirvana drummer saying, “I’ve been on the road for a year and a half, I come home from tour and say, ‘I’m never doing that again. That’s it….