A subtle thought crossed your ecstasy-filled mind as she sucked down your seed. The pleasure of the situation made you casual think to yourself that you never wanted it to end. It wasn't a very serious thought; you had many like it during other situations where you were ecstatic about something. What was different though was the wand. You still had it in your hand when you had that thought, and being the good magical item it was, it followed through with its purpose. Your desire was to be fulfilled, whether you had intended it or not.
This meant that rather than be greeted by a "deflating" sensation of sorts in your member, you instead feel an orgasmic wave of pleasure shoot throughout your body. Weakened from the first blowjob, you almost instantly come again, shooting even more seed into Jessica's mouth. Her subconscious takes this to mean her job wasn't finished, so she continues to suck the man juice down as it comes out. And come out it does. The feelings of pleasure soon subside as do the shots of cum. Peace at last you think to yourself, only for the process to repeat itself once again. And again. And again.
20 minutes pass before your body is exhausted beyond belief. Getting wiped out from sex is something you joked about to your friends but now it was worrisome. The wand had fallen from your grip during the shock of the first repeat and had rolled across the floor out of your reach. You try getting up to get it, but the exhaustion of the blow job and the surprising strength of Jessica's upper body keep you pinned. Attempts to reason with her fail as she is too engrossed in milking you to even move slightly. Things are getting tense. Any longer and you will have lost any hope of getting the wand, leaving only your parents to save you from this mess. Mustering all your strength, you thrust your hips forward and hop off the edge of the couch. Jessica's eyes open wide as your cock slams against her throat, but she otherwise holds on well and lands on the group with you, still sucking. Even if you were unable to rid yourself of her, you are now in reach of the wand. With great relief you swipe it up and command the situation to stop.
Having fulfilled her goal, Jessica removes her head from your crotch. Unluckily for her, you had ordered her to stop right as you last orgasm started, so as her lips parted from your tip a stream of cum shot out, landing on her chin and her expansive bust, soaking into the upper part her tank-top and cleavage. Now that the situation is contained, you stick your cock back in your pants and quickly order her to forget what had just transpired. The last thing you wanted to deal with was explaining to her why she was giving you head.
It works, of course, though it leaves her confused once again. Her chest and top are wet for some reason, and she complains about her stomach nearly bursting at the seams from something warm. Glancing at what was usually her flat belly, you find it rounded and bulging from beneath her top. The near constant 20 minutes of orgasming had over-filled her stomach with your seed, like she had overeaten at a thanksgiving dinner. It was kind of hot, knowing you had inflated her like that.
Feeling sort of sick from her "meal", Jessica excuses herself to lay down in bed. Now alone, you begin to brainstorm on what to do next. Physical transformations seemed interesting to do in particular since you had inadvertently unleashed on one yourself.