с какой радости?

• С КАКОЙ РАДОСТИ? highly coll

[PrepP; Invar; adv; fixed WO]

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⇒ why, for what reason?:

- why on earth?;

- what (in the world) for?;

- [in limited contexts;

- as a sarcastic response to an undesirable request, order etc] to what do I <we etc> owe the honor of...?

     ♦ "С какой радости я сюда пришла? - думала Катя. - Знала ведь, что будет скучно". "Why on earth did I come here?" thought Katya. "After all, I knew I'd be bored."

     ♦ "Сейчас приду, - думал Николай, - и перво-наперво: "Беги, Тимоша, за поллитром". А он мне: "С какой это радости мне за пол-литром бечь [ungrammat = бежать]?"" (Войнович 5). "I'll go and see him right now," thought Nikolai. "First, I'll tell him: Go and get half a liter, Timosha. And he'll say: And to what do I owe the honor of running out for half a liter?" (5a).