an interrogative phrase that is actually a rhetorical question used in response to an opinion that the speaker deems ‘mean’ or ‘harsh’. The idea is that the opinion in question was formed solely because the individual was ‘hurt’ in their past, regardless of facts or other pertinent factors.
Non-blue Check user: “We need to give 10 year minimum jail sentences to anyone involved in the sale of illegal drugs.”
Blue Check: “Uh, wow. Who hurt you?”