Meaning of "get along like a house on fire"

Posted by Alison Pignolet on June 06, 2001

I've used the expression "they get along like a house on fire" often, and realize I don't know what that means, really. Can anyone tell me?

• "Like a house on fire" R. Berg 06/06/01
  • "Like a house on fire" mortimer 06/08/01