Have I got for you!

Have I got (something) for you!

A phrase used before one reveals something that is particularly exciting or surprising. Oh boy, have I got news for you—Becca's engaged! A: "Have I got something for you!" B: "Brownies! Yay, thank you!"
See also: have
Farlex Dictionary of Idioms.

Have I got something for you!

Inf. I have something really exciting for you! (Said earnestly, before saying or showing something surprising or exciting.) Have I got something for you! Wait'll you hear about it! Have I got something for you! You're gonna love it.
See also: have
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • Have I got (something) for you!
  • have I got news for you
  • eggs is eggs
  • from my cold, dead hands
  • (as) sure as eggs (is eggs)
  • (one's) best foot forward
  • best foot forward
  • going, going, gone
  • going, going, gone!
  • great minds