Related Clues:

• Social blunder for Nanette?
• Forbidden activity
• Off-limits
• Something to avoid
• It's off-limits
• Admonition to Nanette
• It's verboten
• It's forbidden
• Off-limits item
• Prohibited activity
• Talking on a cell phone during a movie, e.g.
• Society no-no
• Forbidden subject
• Social no-no
• Like forbidden fruit