Tra la la! Are you worried 'bout impending doom? Those evil villains got you filled with gloom? But don't you fear, there's a hero in the sky, the sky, the sky It's not a bird, and it's not a plane And it's not an egg salad sandwich It's the waistband warrior Hear his mighty battle cry Tra la la! Underpants! Hey, watch out, crime! It's Captain Underpants! It's 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 yeah, by some unlikely chance Captain Underpants is his name Tra, tra-tra, tra-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 he'll fight to save the day, the day, the day Oh, 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! Hey, who's that hunk? It's Captain Underpants! Is that cotton pre-shrunk? Na-na-na-na-na, Captain Underpants, yeah, yeah, yeah Now it is time to fly again! 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! Shoo-wow! Under, Under, Underpants I'm saying Under, Under, Underpants Check out that superhero stance Captain Underpants is his name Stand down, Poopypants! Oh, Under, Under, Underpants! He's Captain Under, Under, Underpants! Yeah, by some crazy circumstance Captain Underpants is his name Tra, tra-tra, tra-tra la la!