Related:

• And all should cry, Beware! Beware! / His flashing eyes, his floating hair!
  Weave a circle round him thrice, / And close your eyes with holy dread, For he on honeydew hath fed, / And drunk the milk of Paradise....
• Beware of Bigfoot!
• Beware of dog.
• Beware the psychopomp
• That sunny dome! Those caves of ice! And all who heard should see them there, And all should cry, Beware!
  Beware! His flashing eyes, his floating hair! Weave a circle round him thrice, And close your eyes with holy dread, For he on honey-dew hath fed, And drunk the milk of Paradise....
• Above all, beware of Zeal!
• Beware low flying ducks!
• Beware of an envelope that ticks.