Giving advice

A: I think he is fed up with his homework .
B: If I were you, I 'd help him.
A: I'm hungry. Can I eat this?
B: if I were you , I wouldn't eat it.
A: Why?
B: Because if you look at the expired date you'll see that it's expired. So you can't eat it.
A: Now I'm tired. I'm watching TV.
B: If I were you, I'd not watch TV. I would have a rest.
A: I am going out to play football.
B: If I were you, I wouldn't go out because you haven't finished your homework yet.