Peanut butter in a cup we sing this song to warm us up! Bang bang choo choo train! Come on __________ do your thing! I can't! Why not?! I just can't! Why not?! My back's aching, the sun's to bright and my hips are pumping from the left to right to the left to the right to the left right left right left-right-left-right-left-right-left-right! Peanut butter in a cup we sing this song to warm us up!