Of course you don't know. You don't know because only I know. If you knew and I didn't know, then you'd be teaching me instead of me teaching you.
8 seconds sound clip from the Willy Wonka & the Chocolate Factory movie soundboard.
You can hear this line at 00:10:28 in the Blu-ray version of the movie.
Quote context
[...]
- Charlie Bucket? Yes, mister Turkentine?
- I shall need an assistant. Come and give me a hand.
- But mixed together in the right way, as only I know how, what do you think it makes?
- And for a student to teach his teacher is presumptuous and rude. Do my make myself clear?
- The trick is to pour them in in equal amounts.
- Charlie, you take the nitric acid and the glycerin and I'll take my own special mixture.
- Are you ready? Good lad. Pour.
[...]