Get what they deserve - Idioms by The Free Dictionary
get what (one) deserves (redirected from get what they deserve)
get what (one) deserves
To be deserving of the bad things that happen to one, usually because of one's past misdeeds. Don't worry, that bully will get what she deserves—just give it time.
ˌget what you deˈserve,
deˌserve all/everything you ˈget (informal) used to say that you think somebody has earned the bad things that happen to them: I’m not sorry he’s in prison. In my opinion, he got what he deserved.