Nick Jonas stopped by Sesame Street to teach kids different kinds of shapes. In a preview of his guest spot on former PBS program that has recently moved to HBO, Jonas joins Cookie Monster, the Count and Bert to serenade a pentagon as they "Check That Shape."
"It's a shape that is so fine," Jonas sings with his puppet squad. The R&B groove is vaguely reminiscent of his hit single "Chains." "Yeah, the shape drives me out of my mind/ How it moves and how the shape slides." From there, Jonas counts the sides on a pentagon and on an octagon. Swoon.