Where did the phrase, 太牛了 come from? Where did the phrase, 太牛了 come from?
I'm guessing it doesn't have anything to do with cows...
It came from 牛逼. 牛逼 means cow's genital orginally and it is derivatized into impressive due to it's wide. Many people are saying it even it's bad meaning. You can both use 太牛了 and 太牛逼了 though.