THE BOOT (OR N. AMER. SHOE) IS ON THE OTHER FOOT
Meaning of THE BOOT (OR N. AMER. SHOE) IS ON THE OTHER FOOT in English
the boot ( or N. Amer. shoe) is on the other foot
the situation has reversed.
→ boot
Concise Oxford English vocab.
Сжатый оксфордский словарь английского языка.
2004