что с того(used to rudely say that you do not think something is important: " "That's the third time you've done that!" "Yeah, what of it?" CALD. so what?/what of it?/spoken phrase. used for showing someone that you think a particular fact that they have mentioned is not important ‘But they're living together and they aren't married.' ‘Well, what of it?' ‘She didn't invite us to the party.' ‘So what? I don't care.' MED Alexander Demidov)
