You'll know for next time.

1. A condolence used A: When there's a pause from the other person and you need something to say or B: When someone's fishing for sympathy and they just don't deserve it.

A:

Romeo: Man I'm really itchy; I think I got crabs off of that Asian girl...

Macbeth:... You'll know for next time then.

B:

Persephone: UEEN, Those goddamn cops gave me another speeding fine. Look at this. Look.

Calavrado: Well I guess you'll know for next time.