I'm completely underweight and I'm very insecure about how I look. I'm not going to lie, I'm a very good looking guy but my body ruins it for me. I'm also shy and awkward, and I don't know how to change myself. No matter how much I eat, I still stay skinny! I even go to the gym and nothing works for me. Any suggestions? Also, if any of you were to guess, what do you think my penis size is?