Ok the adjustments are necessary if you have tight pants on... Getting pinched, zipper pressing into it, every so often it'll get somewhere on its own and get pinched when you walk, the scratchin is from the normal itch once iin a while, and sometimes by hairs getting caught by the elastic band.
As to why we cant pee with you watching.. Its embarrassing sometimes, you have to look at it as in putting you on the toilet you want us to stand in doorway and watch you?
On the animals humping things its an animal being an animal, just be glad us humans dont get the same problem..