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• NOW HEAR THIS, THE FATHER-SON SACK RACE WILL BEGIN IN FIVE MINUTES ON THE NORTH LAWN.
  PARTICIPATION IS MANDATORY, REPEAT MANDATORY. THAT IS ALL....
• Everything that is not mandatory is forbidden.
• Happiness Is Mandatory....Are you Happy ?
• IBM: Ill'manners Being Mandatory
• Mandatory tagline not required for this message.
• That which is not forbidden is mandatory.
• Everything worthwhile is mandatory, prohibited, or taxed.
• Smithers: Mr. Burns, are you ready? Burns: Yes. Smithe
  Are you set? Burns: Yes. Smithers: [whispers] Go, Mr....
• Growing old is mandatory, however, growing up is optional!