The secret word in this episode is OUT which is said 13 and screamed at 12 times.
This is the only time another character Besides Pee-wee would answer Knucklehead's knock-knock joke. Conkey would be the one.
As Ricardo goes to prepare Pee-wee's chicken soup, he says, "¿Para que me mortifico! ¿Vengo a verlo, lo traigo sopa, y para que?" Translated in English, it means, "Why am I stunned. I come to see him, I bring him soup, and for what?"