In college, I was more flexible and had a smaller belly. I could lick my cock occasionally. Twice I got my cock in my mouth a couple of inches deep. The 2nd time, I came in my mouth and swallowed. While it was great, when you’re sucking yourself, your tongue is on the top side of your cock. When I’m getting a blowjob, I prefer tongue on the underside of my cock. I can’t do that when sucking my own cock. I would have loved to continue doing it but was worried I’d hurt myself. That’s a hard injury to explain. I checked that box and was done with it.