I've been his apprentice ever since I was little. Well, littler.
7 seconds sound clip from the How to Train Your Dragon movie soundboard.
You can hear this line at 00:02:35 in the Blu-ray version of the movie.
Quote context
[...]
- Oh! Nice of you to join the party! I thought you'd been carried off!
- Who, me? Come on, I'm way too muscular for their taste.
- They wouldn't know what to do with all this.
- They need toothpicks, don't they?
- The meathead with attitude and interchangeable hands is Gobber.
- I've been his apprentice ever since I was little. Well, littler.
- Move to the lower defences. We'll counterattack with the catapults.
- See? Old village, lots and lots of new houses.
- Fire!
- That's Fishlegs, Snotlout, the twins: Ruffnut and Tuffnut and... Astrid.
- Oh, their job is so much cooler.
[...]