Except only the very privileged feel entitled to sit the way they do at home in public, shared spaces at the expense of other people! Also, your balls don't require what is referred to as manspreading. Not unless they're the size of bowling balls. They aren't. If they were the condition would be visible. In which case, feel free to carry on as you travel to your doctor. Otherwise, assume your fellow passengers want more space & just keep yourself in your own damn seat.