When I was little, I thought "Gee Officer Krupke, you're really a square" was "you're really a squid!" I didn't know that 'square' was slang for an uncool person, so 'squid' made more sense to me.
But yeah, my friend and I made up our own version of the song that goes like this:
"My daddy was a human
My mommy was a shark
My parents didn't realize
Cause it was really dark.
My sister is a mermaid
My brother is a clam
That's the reason I'm the way I am!
Gee, Officer Krupke, you're really a squid
I promise I won't lie to you like your parents did.
Why are you here? You should be in the sea!
Bye-bye now, Officer Krupke!"
In my pants, she has burst like the music of angels, the light of the sun! --Marius Pantsmercy