After The Lonely Island stopped by The Tonight Show Starring Jimmy Fallon on Monday night to promote their new movie, Popstar: Never Stop Never Stopping [1], the talk-show host got them to sing one of their most well-known hits using only classroom instruments. Like Meghan Trainor before them [2], Andy Samberg [3], Akiva Schaffer, and Jorma Taccone got creative with Fallon and The Roots as they sang "I'm on a Boat" while hilariously backed by kazoos, a rubber duck, and some flippy-floppies. Watch their amazing rendition above, and then check out all the other famous musicians Fallon has gotten to sing with classroom instruments [4]!