It's got three heads and a singular mission
That gobbles up everybody's ambition
Your questions stem from an error in play school
And now you're spinning around like a turd in a whirlpool

And sometimes you'll sit in a concrete pit
Until you realize that the monster's full of shit

There's something wrong with the terrible monster
(There's something wrong with the terrible monster)
And there's something wrong with the terrible monster
That lives inside my head
[x2]

(That lives inside my head)
That lives inside my head
[x3]

(That lives inside my head)

Na na-na na na-na na [x4]

And sometimes you'll sit in a concrete pit
Until you realize that the monster's full of shit

There's something wrong with the terrible monster
(There's something wrong with the terrible monster)
There's something wrong with the terrible monster
That lives inside my head
(That lives inside my head)
That lives inside my head
[x4]

Inside my head [x3]