Well, here are a few:
1. When people watch me. Go away.
2. Drawing in a loud, noisy environment. Kills the ideas and generally pisses me off.
3. When I notice people giving the funny eye to my art.
4. When people ask "What is it?" I swear to God, if you don't shut your f***ing face, Imma going to pun-
5. When I ask for critiques, I get this: "My four year old sister could do better than that." or "Ew, it's animu!". Maybe your four year old sister does draw better, but how it that going ******** help me? Also, I understand your mounting dislike of the anime/manga "style" but could you possibly look beyond that to critique?
6. If you draw anime, people automatically assume you're all "Kawaii, DESU, SPARKLE SPARKLE!" I do happen to draw in other "styles" and draw other subjects.
7. When my mother always sees my drawing and say the breasts are really big. I'm sorry, but they look fine to me. rolleyes
8. When my sister goes through my books, critiques the s**t out 'em, and always points out this paticular drawing where the girl in question is sitting down, but since I didn't finish it, it looks quite nasty. I'm no expert in critiquing, but she acts like she knows every little thing there is to it.
Now I'm done. I probably could list a few more. But I'm not going to.