Shih-tzu rules

• The Shih Tzu is not allowed in the house.
  
• Okay, the Shih Tzu is allowed in the house, but only in certain rooms.
  
• The Shih Tzu is allowed in all rooms, but has to stay off the furniture.
  
• The Shih Tzu can get on the old furniture only.
  
• Fine, the Shih Tzu is allowed on all the furniture, but is not allowed to sleep with the humans on the bed.
  
• Okay, the Shih Tzu is allowed on the bed, but only by invitation.
  
• The Shih Tzu can sleep on the bed whenever he wants, but not under the covers.
  
• The Shih Tzu can sleep under the covers by invitation only.
  
• The Shih Tzu can sleep under the covers every night.
  
• Humans must ask permission to sleep under the covers with the Shih Tzu