To give you a serious answer all lightweight bikes can break if you crash them, CF included. That said CF is a lot stronger than many people think, and the odds of breaking your frame in a crash are reasonably low.

I've had 2 crashes in races with my CF bike, and the bike is still fine. I've seen many other people crash Cf bikes without breaking them. And I've seen a few crashes that totaled CF frames, steel frames, and Al frames.

Also, realize that if you do crack a CF frame it's usually repairable.