While self-pleasure is as natural as sex itself, there's no doubt a sense shame that comes with some good old fashioned jacking it. Personally, I don't see the big issue in admitting you masturbate. I mean, I'm masturbating while I write this. Well, not "while I write it," but in about 30 seconds I'm going to lose concentration and skip over to Pornhub...
***5 minutes 15 seconds later***
***Ok, fine 2 minutes later***
Ok, where was I? Oh right, some masturbation jokes you can be ashamed of getting.