No smoking or alcohol, etc.
Grunkle Stan wasn't allowed to smoke cigars,
Wax Groucho marx commented on holding a pen instead of a cigar,
In Northwest Manor Mystery Manly Dan loudly announces the two kegs he's bringing are filled with MEAT instead of booze.
Also, "Not S&P Approved" was put in after Standards & Practices said they couldn't have a spin-the-bottle joke.