I'm not talking about masturbation. It's when you just came out of a shower and you're browsing the web, and naturally you find one of your hands down your pants. I noticed that I do this when I saw my housemate doing that in the living room during the night when it was cold. And I realized that even I, and every other male probably, does that too.
Why's this? Why do we feel comfort when we just stick our hands down our pants?