The first thing we learn as children, as soon as we can speak sentences is "please" and "thank you". And judging by the conversations in the dining room of the old folks home, it is the first to go when we get old. Here, as a convenience to those you you who may visit an old folks home is an interpretation from old folks lingo to normal polite English.
Hey, I didn't get no brown sugar
Translation: May I have some brown sugar
You forgot my grapefruit
Translation: May I have some Grapefruit, please.
You're in MY chair.
Translation: If you'd like to sit there toeay, I will move over here.
Translastion: May I have a refill, please.