Tra la la! Are you worried about impending doom? Those evil villains got ya filled with gloom? Don't ya fear, there's a hero in the sky! The sky! The sky! Its not a bird and its not a plane And its not an egg salad sandwich Its the waistband warrior Hear his mighty battle cry Tra la la! Underpants! Hey watch out, Crime! Its Captain Underpants! Its wedgie power time! Na na na na na Captain Underpants! Yeah, yeah, yeah! Faster than a speeding waistband! Underpants! He's busting down doors! Captain Underpants! While wearing just his drawers Na na na na na Captain Underpants! Yeah, yeah, yeah! More powerful than boxer shorts! His name is Under, Under, Underpants! I'm saying Under, Under, Underpants! Oh by some unlikely chance Captain Underpants is his name Tra la la! Snap your fingers and he'll be right there! That freaky bald dude in his underwear He'll drop his trousers And fight to save the day! the day! the day! There he goes in his dashing cape! Here he comes in his tighty whiteys All the bad guys soil themselves every time they hear him say Tra la la! Underpants! Yeah, who's that hunk?! Captain Underpants! Is that cotton pre-shrunk? Na na na na na Captain Underpants! Yeah, yeah, yeah! Underpants! Suspend your disbelief Captain Underpants He'll save the world in his briefs Na na na na na Captain Underpants! Yeah, yeah, yeah! To the skies! Wow! Under, Under, Underpants! I'm saying Under, Under, Underpants! Check out that superhero stance! Captain Underpants is his name! Oh, Under, Under, Underpants! He's Captain Under, Under, Underpants! By some crazy circumstance Captain Underpants is his name Tra la la!