the boot/shoe is on the other foot the situation is now the opposite of what it was, especially because someone who was weak now has power 情况完全反了过来;此一时，彼一时 He was my boss in the company but now the shoe is on the other foot. 在公司里他原是我老板，但现在我成了他的上司。 His brother used to tease him for being small, but now the shoe is on the other foot. 他哥哥去过常嘲笑他矮小，但如今的局面刚好相反。