Oh.
3 seconds sound clip from the Labyrinth (1986) movie soundboard.
You can hear this line at 00:35:29 in the Blu-ray version of the movie.
Quote context
[...]
- No, Your Majesty! Not the Eternal Stench!
- How are you enjoying my labyrinth?
- Oh.
- Really? Then how about upping the stakes. Hm?
- You say that so often. I wonder what your basis for comparison is.
- So the labyrinth's a piece of cake, is it?
- Well, let's see how you deal with this little slice.
[...]