It means that a situation has reversed itself and the person who was previously at an advantage has been left at an uncomfortable disadvantage - as would be the case if they put their boots (or any footwear) on the wrong feet.
The boot! The boot!The boot! The boot!
The boot was a medieval torture system. a foot was placed in a metal boot and wooden wedges were hammered in.
Break a foot
It depend but probably a month or so. The boot should be worn because it helps the foot heal.
A boot is worn on the foot.
Maybe you need a bigger size of boot... which may be the reason your foot hurts in the first place.
Cut off your foot.
yes
Foot gets sweaty
A boot covers the entire foot, as well as the ankle and sometimes more of the leg. Boot generally refers to sturdy, supportive footwear.
It's shoe - "The shoe is on the other foot."
No. A steel shank is a piece of metal along the sole of the boot which provides support for your foot. The Steel toe of course is a shell around the front of your foot protecting from dropped hammers or anything along that line.