a good, bad, heavy, light, etc cropper
He got a cropper yesterday while out riding.
His teacher predicted that he will come a terrible cropper.
We nearly came a cropper in the second half of the game.
Loyd came a cropper on his bicycle and broke his leg.
A high-wire hamster who loves to show off her circus skills almost came a cropper when she slipped off a tightrope in the middle of a routine.
I have seen some of these bright ideas of Smith's is too clever by half, is that young man;one of these days he'll come a cropper.
If you are quite set on trying to outwit Chao Po-tao, just be careful you do not come a cropper in the process!