How do you tell your friend's to stop coming over just to eat ???

Well, you could try changing your eating time or change the place where you dine so that they won't know that you'll be eating. Another thing is, whenever your friends are coming, ask them to at least contribute something to the food. And during the course of eating, tell them that tomorrow is their turn to feed you.

LOL I have no idea. That is a tough one. I would have to just tell them. Maybe something like I would like you to bring sometthing over to contribute to dinner, or maybe just tell them sorry, I am about to eat and I didnt make enough for extra people.

Tell them to call first and if you have the caller id, then you'll know it's them. Eat before they get there and that way they'll probably get the hint and not try to come over just for food.