Self-confident lad scoffs endless meal (6)

I believe the answer is:

bouncy

I'm a little stuck... Click here to teach me more about this clue!

'self-confident' is the definition.
Both the definition and answer are adjectives. Perhaps there's an association between them I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for bouncy that I've seen before include "Lively, confident" , "Buoyant and elastic" , "Resilient; lively" , "Rebounding, as plastic castle say" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.