"С ума сойти" is an exclamation of surprise, excitement, disbelief. When you see or hear something that is awesome, unexpectedly good or bad, extraordinary in all means, in other words, something that may drive you crazy, you may exclaim "С ума сойти!" (its literal meaning is "to go crazy")

Veery good expression! Highly recommended to use. It's real literary in contrast to "офигеть","обалдеть" и "жесть" (sorry, Anya..:)). Some more of nice literary exclamations: "Ну и ну!", "Вот это да!", "Фантастика!" Good luck!

If you talk " С ума сойти!" this means,rapture. If you talk "С ума сойти..." this means, mistrust or even dislike. In general, few people know colloquial meaning of this expression ... This is just an expression of strong feelings and big emotion. In Russian colloquial vocabulary many such expressions)) Similar expressions are "Офигеть!",Обалдеть!,Жесть! and other...=)Maybe you've heard these expressions... Tell me that I misspelled wrote,please.

Часто говорят так: "Сойти с ума от счастья!"

It drives me crazy (about the extraordinary events or news).