I am a 49 yr old straight male, and I've enjoyed wearing a butt plug in public for several years.
My ex and I enjoyed a pretty wild and adventurous sex life together. We both enjoy anal stimulation, so it was really exciting when we discovered the fun of butt plugs.
Initially, we would just wear them while having sex. It didn't take long before we had the kinky idea to wear them out in public. We both loved the thrill of being secretly plugged while no one around us knew about it.
One year, we even went to my first company Christmas party at a new job while we were both plugged. It was really hot to be introducing my wife to my coworkers and my boss, while they had no idea how kinky we were at that very moment.
Since then, I've gone just about everywhere in public while wearing my plug. I enjoy the naughty thrill of talking to a cute cashier while I am plugged, and often wonder if others around me might be secretly plugged as well. I've been to the grocery store, movie theater, out for dinner with friends and family, gotten massages, haircuts, and even gone to the dentist while I was plugged (which made the hour-long cleaning session much more enjoyable).
I now have several types of plugs in various sizes and materials. Each has its own feel and purpose for me, but I am always drawn to those I can wear in public.