From the wonderful Dictionary of American Regional English.
  1. Hot as a Half-F**ed Fox in a Forest Fire (Virginia)
  2. Hotter Than Dutch Love in Harvest (Wisconsin/New York)
  3. The Bear Got Him ("the bear" is heatstroke; South Carolina)
  4. Training Grounds for Down Below (Georgia)
  5. She Sure is A-Beamin' (New Mexico)
  6. Hot Enough to Roast a Lizard (South Carolina)
  7. Hot Enough to Melt Clabber
  8. It's a Torcher (Wisconsin)
  9. Full of Moist
    (Let's not bring this one back.)