great balls of fire
An exclamation of surprise and amazement. Did you see that game? Great balls of fire—the Yankees tied it up with two outs in the bottom of the ninth!
Great balls of fire!
Inf. Good heavens!; Wow! Mary got up to play the fiddle, and great balls of fire! That girl can play! Tom: Will you marry me? Jane: Yes, I will. Tom: Great balls of fire! I'm the happiest man on earth.