This week’s idiom is as Tough as old Boots!
This idiom has two different meanings.
If you describe someone as tough as old boots, then they are strong and don’t get hurt easily.
A: How is John after his surgery?
B: He’s fine, you know him, he’s as tough as old boots.
If you enjoy eating a tender steak, then you wouldn’t want one that is difficult to eat or cut into. It also could be described as tough as old boots.
Waiter: How is your steak, sir?
Customer: I’m afraid it is as tough as old boots, I can’t even cut it.
Below are links to two interesting articles which use the expression in an authentic way:-