He says, it's a long story.
5 seconds sound clip from the Hotel Transylvania movie soundboard.
You can hear this line at 01:02:57 in the Blu-ray version of the movie.
Quote context
[...]
- A human? Stay close, pookie!
- He says, There is ze human. He has a French accent.
- Johnny's not a human. He's my right arm's cousin. He's lying.
- Yeah. And why is he picking his nose?
- Hey, wait, no! Get off me! Ew!
- Is it true? Are you a human?
[...]