Question No 43

Please may I have a few oranges. - I would like a small number of oranges.
Please may I have some oranges. - I would like a number of oranges.
Please may I have little oranges. - I would like oranges that are small in size.
Please may I have less oranges. - You have offered me too many oranges, I would like a smaller amount.
(note no comma after please)

I see no real difference between 'a few' and 'some'. Possibly 'a few' emphasizes that you do not want many. You might expect to receive more oranges if you ask for 'some'.