A polite way of introducing a request to someone for something you want or would like for them to do. Often followed by "could" or "would." I don't suppose you have a pen? Mine just ran out. I don't suppose you could bring this to Johnny tomorrow, could you? He needs it back, but I'm going to be at a dentist appointment. Hey, Mom? I don't suppose you would go over this math problem with me? I just can't get my head around it.