Here’s a stupid YouTube short I came across.
https://youtube.com/shorts/Q_MxVDP9IrA?si=YMFWrfEP_UFNPlvv
I’m going to use my God given talent and make an assumption. McCain absolutely had one on his leg and tried to cover it with a boot. He tried to muffle it while he attempted to carry on about his business. If that’s the case, then I think it’s hilarious that it got swapped to the other leg! Forcing him to publicly feign injury to the opposite leg.
There's a long list of footboot wearers