Old versus Young

Typical lines that an uncle will tell a youngster if you rub him up in the wrong way on a local train: 1) Don't try to teach me!! I have been travelling since x no of years. ('x' is directly proportional to the amount of white hair on his head or his baldness) 2) Today's youth has no respect for the elderly! (This is something that he heard in his youth & has been itching ever since to tell it to someone else) 3) Will you treat your father in this same way? (Punch him on the face & tell him he can never be as good as your father) 4) God knows what will happen to this country! (As if he has been running it till now & is worried about his heirs). If you guys have experience more,please feel free to comment.