Definition of 'the boot/shoe is on the other foot'
the boot/shoe is on the other foot
If you say, in British English, the boot is on the other foot or, mainly in American English, the shoe is on the other foot, you mean that a situation has been reversed completely, so that the person who was in the better position before is now in the worse one.
You're not in a position to remove me. The boot is now on the other foot.