Related Clues:

• Taboo action
• A doofus might do it
• With 36-Down, 1925 Broadway hit
• Taboo temptation
• Admonishment to Nanette
• Simply not done
• Something prohibited
• Taboo practice
• It's inadvisable
• It's not allowed
• Improper act
• Sticking a fork in the toaster, e.g.
• Toddler's taboo
• Something taboo
• Moral philosophy topic