I think it's because of the alternating pressure & release, pressure, release, press, release ... It's easy to go at it for quite a long time this way... as my dick doesn't become sore or tender. Nor do I masturbate continuously. I tend to work in short cycles - press, press, press, press; pause; then back to press, press, press, ... I also pause when using the mouse to switch photos. Then back to my relentless rhythm.When I'm wearing the masturbation shorts & I feel myself becoming wet with. "Okay." I say as I suck your head into my mouth slowly, flicking my tongue across the tip. Because as much as I love the sound of your pleasure....I love the taste of your cum more...and I'm hungry. I move one of my hands from your thigh to under your ass for stability.I take you in about an inch, then pull back out, then down another inch, and out again. This must be agonizingly pleasureable for you.I've finally got you entirely in me. And I pause there to hum a bit. You shudder and moan in. " Jen! You're becoming a dirty little girl. Is sex the only thing you think about?" Well, um, ah... yeah, I guess it is, at least when I'm with you and feeling horny." How often do you get horny?"I laughed and said, "I'm always horny for you."Eddie shook his head as we walked up to the front door of the Waters' house. I knocked on the door and waited for an answer. After we stood on the porch for a few minutes, I knocked again. I was just about to tell my brother we should leave when Brad. Panties and stockings mostly," I said."Oh... that's fun. Did you get any good deals?" he asked me."Nothing was really on sale but I like what I got. Do you wanna see some?" Sure. Why not?"I reached into my bags and pulled out my thongs. I held them up in the air then placed them over my lap like I was wearing them."What do you think?" I asked."Very cute. Your boyfriend will love those!" he exclaimed as he reached down and touched the elastic waistband."No boyfriend. Just wanted to spoil.