You've no idea what happened...
4 seconds sound clip from the It's a Wonderful Life (1946) movie soundboard.
You can hear this line at 02:04:55 in the Blu-ray version of the movie.
Quote context
[...]
- Fine! Not a smidge of temperature. Not a smidge of...
- George! George, darling! George, darling. Where have you been? Oh, George, George, George...
- Let me touch you. Let me touch you. Are you real?
- You have no idea what's happened to me.
- You've no idea what happened...
- Well, come on, George. Come on downstairs, quick.
- They're on their way. All right. Come on.
- Now, you stand right over here by the tree.
- Right there, and don't move. Don't move.
[...]