It's not a story, it really happened.
3 seconds sound clip from the Barbie in the Nutcracker movie soundboard.
You can hear this line at 01:07:29.184 in the DVD version of the movie.
Quote context
[...]
- I see the mice had a party of their own last night.
- It wasn't a party, it was a war.
- The Nutcracker was fighting the Mouse King, who shrunk me with his golden scepter.
- I've never heard such a story, even from your aunt.
- It's not a story, it really happened.
- Tommy, did you take my Nutcracker?
- Why would I want him? He's just a hunk of wood.
- You're wrong. He's really a king.
- An evil mouse was ruling his land. The mouse had a bat...
- What's all this foolishness? Perhaps I should send for a doctor.
[...]