"The Man Who Built the World in His Basement" is sung by Stan in "The Shrink" as he explores his model world from the perspective on a miniature figure after shrinking himself with a CIA shrink ray. The song is set to the melody of the 19th century English parlor tune, "The Man Who Broke the Bank at Monte Carlo".
As he walks beneath the lamplight sun with a toothpick as a cane
You can hear the girls exclaim
[high-pitched voice] Is that man insane?
No! He'll live a lie, but never die
And that's a truth you can't deny
He's the man who built the world in his basement