Related Clues:

• Prigs
• Goody-goodies
• Certainly no libertines
• They're no fun
• Stuffed shirts
• Fuddy-duddies
• Overly decorous sorts
• Over-decorous ones
• Prudes
• Snooty
• Priggish ones
• Prissy ones
• Libertarians they aren't
• Frustrating dates, maybe
• Unlikely attenders of R-rated films