10 Naira Notes

As I was going to visit a friend, I saw my neighbour's little child at the other end of the street holding two ten naira notes, he was crying profusely.

I asked him, ''Junior, what is the matter?''

He replied, ''My mummy gave me two ten naira notes to buy one sugar and one loya milk and now I don't know which note is for sugar and which note is for loya milk.''