I did this when riding and when working around wet areas. It keeps the pants from wicking. When riding, leather against leather is more comfortable than leather against jean against leather. (to me) edit - oh, yes. When mucking out the stalls, it keeps you from getting stuff that's not easily cleaned on your clothing. Leather wipes down easily.
Perfectly acceptable, when you working. I'm referring to those who think it's a fashion statement. Pirates always get special exemptions.
Texting or playing games on your phone at the gym. Why bother going to the gym at all? Yesterday there was a guy next to me, fully engrossed in his phone tapping away. For every set he did I did 3. When I walked by I saw he was playing a game. I leave my phone in the locker so I focus on the task at hand.
Also known as fidget spinners. For kids with behavior or attention issues. It helps them be able to sit still, quietly for longer periods of time.
Come to think of it, there are actually a lot of things I might consider acceptable if you were bringing me Rum.
I allow for listening to podcasts (edit: or music) while on cardio. There are some interesting studies going on that seem to say it's easier to pick up a foreign language if you combine the learning with exercise. It's too soon to tell if it's true, but I have my Dutch learning pod cast on during cardio. I ignore any texts or emails that come in during that time.
A few years ago-a guy right next to me on the treadmill let the entire gym know how he felt about his I-phone battery going dead on him. It's a wonder that he could continue his workout the way he was yelling!!