Kinderlumper

Der Kinderlumper is a song from the episode of the same name sung by Dr. Doofenshmirtz. Originally sung by his mother to him, it tells the Drusselsteinian fairy tale of the ferocious Kinderlumper, who takes misbehaving children and puts them in his gundersack. A version presenting the Kinderlumper as a positive figure is partially sung by Roger later in the episode; this version was also taught by their mother.

Lyrics
Dr. Doofenshmirtz: The Kinderlumper's probably gonna get ya

'Cause you've only ever been an awful kid

Pretty soon he's gonna come and catch ya

Then everyone will know just what you did

Because...

If you make some bubbles in the bathtub

If you've got saliva in your mouth

If you ever feel the need to blink your eyeballs

If he finds you breathing in and out

The Kinderlumper's gonna get ya

The Kinderlumper's gonna get ya

If you ever drink a glass of water

If you turn your head just slightly to the right

If you ever feel the need to use the bathroom

Then the Kinderlumper's gonna strike tonight!

The Kinderlumper's gonna get ya

The Kinderlumper's gonna get ya!

The Kinderlumper's gonna get ya

The Kinderlumper's gonna get ya!

He's gonna get you good!

The Kinderlumper's gonna get ya!

Roger's version
Roger: The Kinderlumper's always going to love you

And bring you lots of presents while you sleep...

Background information

 * The song is styled after the Hi-De-Ho man himself, Cab Calloway, specifically, his signature tune "Minnie the Moocher".