You are not a lazy employee who can use the fake excuse of "Oh, I didn't understand you the first time". This is you talking to yourself, and you know darned well what you meant. You've said it, you had good reasons, it's a good rule, now follow through for the love of warriors!!! Don't repeat yourself, and don't stay up till 6:30am the night after you make a rule for yourself to get sleep. That's like a kid having to be told numerous times that cutting your own hair is dangerous for a five-year-old. Now he's missing both ears. That's stupid. Don't be like that.