Watch the Lonely Island and Jimmy Fallon Sing ‘I’m on a Boat’ With Classroom Instruments, Appreciate the Dunce

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The Lonely Island dropped by Jimmy Fallon's Tonight Show on Monday, a perfect opportunity both to promote Popstar and to do a classroom-instruments version of their hit "I'm on a Boat." As you'll see above, yes, Andy Samberg and Akiva Schaffer nail their respective verses, but Jorma Taccone, his facial expressions, and triangle might be the real MVPs here.