The boot is on the other foot

Pro Tip 1/3

Use it when there's a change in who has control or advantage in a situation.

He used to be my supervisor, but with the latest promotion, the boot is on the other foot.

Pro Tip 2/3

It's often used when discussing sports, games, or competitions that have changing winners.

The boot is on the other foot this season, as the underdogs lead the league.

Pro Tip 3/3

Remember it's a metaphor; it has nothing to do with actual footwear.

When dad joined the dance class, suddenly the boot was on the other foot, and he had to follow my lead.