you'll keep meaning australia

In Australia, “you’ll keep” isn’t a threat so much as a rain check on revenge—translation: I’ll deal with you later, sunshine.

It’s playful, mildly menacing, and typically delivered with a smirk rather than a boxing kangaroo.

Think of it as putting your nuisance on lay‑by: you’re not off the hook, just accruing interest.

Example: after your mate steals the last snag, you mutter, “You’ll keep,” and hide his sauce for a week.

Used with friends, family, and anyone who should know better—tone does the heavy lifting.