Why is it considered necessary to nail down the lid........

• The Hobbit

  30 Jan 05, 15:40

  ........ of a coffin?
• droopyeyes

  30 Jan 05, 16:07

  In case the person (dead man) comes back to life, and scare everyone out of life.
  
  so .. to prevent such incident to happen, since they are reckoned to be corpses, the coffin will be nailed.