Don't fool around, you're learning.
2 seconds sound clip from the The Return of the Living Dead (1985) movie soundboard.
You can hear this line at 00:02:56.836 in the Blu-ray version of the movie.
Quote context
[...]
- Come on, kid. Follow your uncle here. Here we go.
- I don't have to tell you what these are for. Ba ba ba boom!
- Here we've got the prosthetic devices, all around here. Look under there. Wheelchairs.
- Here's something you don't see very often. You're a privileged person.
- These are split dogs. Yep, for veterinarian schools. Oh, we get a lot of orders for split dogs.
- Yeah.
- Don't fool around, you're learning.
- We usually got more inventory than this, but, ah, we're expecting a shipment on Monday.
- How many bodies are in here usually?
[...]