You would take a day off without permission,so you can't complain if you were fired.
You would spend all day looking at all the shops in the area,so you can't complain if you had aching feet.
You would have tow huge pieces of cake with your coffee,so you can't compain if you couldn't ear you lunch.
You would wear a T-shirt on a cold day,so you can't complain if you caught a chill.
You would fail to repay your friend,so you can't complain if your friends refused to lend you any more money.