I made sandwhiches for a while. I noticed how pleased human sized people were when I gave them the portion of sauces I asked for. Light amount of mayo? Here you go. Only a little bit of oil? Sure! I can do that! The fat ones though. They would ask for more and more and more. Their sandwhiches would be pools of mayo. Eventually I started putting twice as much mayo from the get go on fat peoples sandwhiches. And then they complained less.