Literally, “bread for one's teeth”.
pane per i propri denti
- something that provides a challenge to one; something that tests or exceeds one's abilities
trovare pane per i propri denti- to meet one's match
- (literally, “find a challenge”)
Non è pane per i tuoi denti.- You're not cut out for it.
- (literally, “It's not a feasible challenge for you.”)