Fall Out Boy bassist Pete Wentz had a surprise for fans who showed up at the band’s pop-up show in Los Angeles on Tuesday night. He parked an ice cream truck outside and served ice cream to the fans who were waiting to get into the secret gig at the Whisky A Go Go, which also featured Green Day and Weezer. The show was meant to promote the announcement of next summer’s Hella Mega Tour featuring all three acts. Wentz told Apple Music that his band bought the truck to coincide with the tour and their accompanying new single, “Dear Future Self (Hands Up).” Wentz explained about Fall Out Boy’s new venture, “We’re going to drive that around and put out some Fall Out Boy ice cream. I have a guy like this, that procures the ice cream truck for me . . . in relation to the song, there’s nothing sadder than when you see an ice cream that has come off the cone, and is on the ground. Like, that’s the saddest. I want to do a whole Instagram of those. They’re really sad.” The video for “Dear Future Self” is also ice cream-themed to tie into Wentz’s new obsession. The new track will appear on the upcoming Greatest Hits: Believers Never Die – Volume Two, out November 15th.