I never knew Bart’s “Can’t sleep…” had made such a mark on pop culture until I Google’d the phrase:

-From a BBC News story about clowns: “The place of the scary clown in mainstream popular culture can be seen in The Simpsons with Bart’s intonation of ‘can’t sleep, clown will eat me’.”

-This Wikipedia user.

-There’s an Alice Cooper song named, you guessed it, “Can’t Sleep, Clowns Will Eat Me.”

-This whole website.

-This photo:

-And the original: