“I’m down, but there’s not enough time for the whole shabang, so just a quickie.” You reached down to grab your girlfriend’s girthy one eyed monster, eliciting a grin from the girl. Her meat chub lengthen and bulged in your hand, quickly outgrowing your grasp, forcing you to use both hands to slowly jerk off the fuck stick.
“Holy! This isn’t a dick it’s a fucking sword!” You stopped jerking for a moment to swing the hefty erect rod like a master swordsman.
“Impressive isn’t it? It’s about 16 inches now, so big that I can’t even walk with this bad boy, so you better get me off.” She moaned as you teased the underside of her large mushroom dickhead.
Pre cum was leaking profusely from your girlfriend’s throbbing cock, aiding your ministrations in pleasuring your girl, which was succeeding, evident from her silly moans and smile. You’re ignoring your own dick, but it was sure making a tent in your pants. Time was running out, so you picked up the pace, fapping faster.
“Oh fuck, it feels amazing!” She grips you by the shoulders and pulls you in for a deep kiss, tongue dancing with tongue. All the while you upped the speed, until the rhythmic throbbing cock in your hands jerked wildly of its own accord. You knew it was the signal.
You broke off the kiss and moved to her side, clear of the blast range, and gave a final fap. Your girlfriend froze in place, and moaned silently as her cock pulsed and shot an arc of jizz into the bushes. Another arc and another flew high into the air like tracer rounds from a machine gun. Every shot her pendulous balls tightened and released, repeating with every wave of white semen shot. Your girlfriend was a quick shot, untrained in holding back, pouring every drop of goo into her orgasm.
“So happy with having a dick now?” You teased, once her cumshots had subsided.
“Fuck yeah!” She breathlessly exclaimed in joy, “Having a cock is incredible, like everything is focused down there. It was super, I love it!”
“Hopefully not as much as you love me. Now let’s go before class begins.”
Both your girlfriend and you, cleaned up as best you could, mainly by wiping down her large cock with pocket tissues, before stuffing the thing back into her panties. You had to carry your girlfriend in a princess carry while running to class to make it on time. Downside to having a biggus dickus was running speed, but you both made it to class by the skin of your teeth.