I was brought up to think that it was natural to be seen naked or see other naked in an appropriate situation, ie locker room or showers at school or sports club, so I am very accustomed to being naked in company...and in saunas in Germany and Scandinavia nudity is compulsory (for hygiene reasons-- clothing is dirty!) and men and women mix without any problems...and one sees all sizes and shapes!
I prefer going commando if I can (I did so for a couple of years fulltime...now only evenings and weekends). If I wear underwear, tanga briefs are the most comfortable- max suppprt with min coverage and they don;'t ride up my backside; for gym and sports a jockstrap keeps everything snug...I don't like my tackle bouncing around then.
I feel very frustrated if I don't come...and these days it take slonger to build up to a stiasfactory finish...so mored edging and almost getting there, then holding back, but it leads to an amazing eventual orgasm and masses of jizz...
I wank my circumcised cock generally with lube (Swiss Navy and Liquid Silk are good)...rubbing a lubed helmet is bliss and the area of my circumcision scar is also very sensitive...it's great as I work my hand up my shaft over the circ scar and hit the helmet rim.
I also wank regularly at work...I used to have a private office so could unzip at my desk, wank standing up and shoot my load on to the top of the desk; now I am in an open plan office, so although I can rub my cock under my desk, I have to wank in the toilet...but I work my cock so furiously as I shoot that the jizz flies everywhere!