1. Making a mess when he's cooking.
2. Not helping with the dishes even when YOU cooked.
3. Offering cooking advice like a backseat driver.
4. Watching over your shoulder while you're cooking.
5. Adding ingredients and interfering behind your back.
6. When he's secretly a better cook than you.
7. His cooking tastes awful.
8. He takes too long to make things.
9. Posting photos of meals he cooks on Facebook.
10. Hogging the kitchen and refusing to let you cook.