I recently learned that briefs can be changed without removing pants and shoes. Below are some videos I found that show the process. I have not tried any yet but plan to put it in practice at home before trying away from home. One video says to "fluff" the briefs and it will be more absorbent. I had never heard of this before but I think it might even be more comfortable on the skin if it is not so stiff. I think removing one pants leg and shoe seems the simplest. I even read somewhere that someone was using two at a time then simply tearing sides to remove the soiled one.
If anyone has used these type techniques, respond with any additional tips you have.
https://youtu.be/IQ2vZH_J1jg
https://youtu.be/7lV8FgbSd40
https://youtu.be/S7fPpTqdUg0
https://youtu.be/n9lRSGaX6R4
https://youtu.be/Bde7PRzvECE
Rowan Atkinson, the famous British comedian, does a 'schtick' where he is able to take his briefs off without removing his pants. It's pretty low humor, but fascinating all the same.
Not applicable for someone whose mobility is poor, but an interesting and kind of funny thing to watch.
Just slip the foot through one side of the undergarment, and pull it through the pant leg.
Then, take the other side of the undergarment, and pull the side of the undergarment through the other pant leg, and loop it over the foot.
Then, the undergarment will be inside the pants, and all you have to do is pull them up!