damn wowzer, you can 4 inches in? I am jealous. I love the feeling of a warm mouth on my dick, and can get a little bit of my dick head in but no where near 4 inches and can't get any of my shaft in either. My dick is pretty long but I'm just not that flexible.
When I was in college I used to hook up with this girl that just loved sucking dick. She would suck my dick a couple of times a day in between classes, a couple of times I had her hold my head down as I sucked my own dick. Loved the feeling of my own mouth on my big dick head but also loved to taste of my dick in my mouth. I'm not gay, I guess I'm just that into my cock.