Related Clues:

• Golden number
• Minor minder
• Not for kids
• One not seen in "Peanuts"
• 21-year-old, by most accounts
• Doo-wop favorite, e.g.
• Tune for the unhip
• Doo-wop song, today
• Stage of growth
• Classic song
• R-rated, say
• Majority member?
• Smash from the past
• Bit of nostalgia
• Full-grown