Giving a mouse a cookie is simple enough, but he'll want milk to go with it and when he's done with the milk he'll need a mirror to make sure he doesn't have a milk mustache and when he looks in the mirror he'll notice that he needs a haircut and on and on. One event will lead to another and before you know it, he'll be back to wanting a drink of milk and a cookie to go with it. Our advice: don't give a mouse a cookie!