Have you ever noticed that sarcasm doesn't translate well into writing? You have to add a note saying that you're being sarcastic or people might take you literally. This means that I end up censoring myself quite a bit.
It's amazing how often I can come up with sarcastic comebacks to stuff I read online, but I'm always at a loss for words in real life. So often lately I find myself choosing not to say anything because I realize that what I'm writing will most likely be taken wrong. I wonder sometimes if I'm just no good at expressing myself, but in conversation I can do just fine.