Things Pee Wee never would have used as a secret word...

Constipation

Obviously you have been watching Adult Swim huh…

How about…
“The”

Eh, maybe he would have.

Something else rhyming with “…ation”

"‘Shoah’? Why, that’s our secret word of the day! AAAAAYAAAH!

“Today’s secret word is… Theodolite, theodolite…”

Menstruation

Mastication?

Arrest Warrant.

Mugshot.

Nurse-Nancy?

That’s exactly what I was thinking of. With “public” in front of it.

molestation

Indictment.

Wish

Wish? [everybody screams] Did somebody say wish? [everybody screams]

Yeah, I can see why they never used that one. Never want to piss off a genie.

Your wish is granted. [everyone screams] Long live Jambi.

I don’t know why I remember this, but that WAS a secret word… in a Mad magazine parody of the show.

My son bought the family the boxed set for Christmas one year. I love that show!

Don’t forget your giant underpants.

Gestalt.

Syphilis

Necrotic

Scatology

Negroid