Carrie didn't know what to do! She didn't want to worry John, but she didn't want THIS! She quickly turned towards the vendor.
"Stop! Turn it off! He's..." She lunged towards the nozzle on the tank, but was stopped before she could turn it off.
"It's not a good idea to stop the changes midway, the effects can be... Unpredictable." Carrie stared at the vendor, before looking back at John. John continued to inflate, now at least twice Carrie's size and, also, very obviously a woman!
"That's my HUSBAND! And I'd prefer he stay that way!" Carrie grabbed onto the hose as tight as she could, and placing a foot on John's inflating body, she pulled with all her might!
POP! The hose pulled right out as Carrie stumbled over backward. The vendor, a bit shocked stared in amazement for a moment before shutting off the nozzle. John, on the other hand, began to deflate! The gas that inflated him seemed to be releasing as he gently started to float back down. Carrie, lying on the ground, watched as his figure started to shrink and squeeze, starting to become more human in proportion. Except... The changes that had happened didn't seem to be going away! If anything, they seemed more pronounced now that he was no longer a balloon! John's waist and hips had a very prominent hourglass shape to them, his face was very feminine (and surprisingly cute!), his legs and arms were smooth and, of course, on his chest were a large pair of breasts! In fact the ONLY things that hadn't changed were John's clothes, and his hair (giving him a rather 'tomboy'ish look). John, still deflating, seemingly still hadn't noticed what had happened, as Carrie ran up to 'her'.
"J-John! Are you okay?" John opened her eyes, a bit disoriented still from the inflation. She looked around a bit before looking down at Carrie. She was still several feet taller than her, but steadily shrinking down.
"Carrie...? What happened? Am I a toon...?" John didn't even notice her new, girly voice. Carrie was relieved that at least John wasn't hurt.
"Um, kind of... The gas, it turned you into... Well it made you... I-I'm sorry!" John was confused, but since she had deflated enough to be about back to normal size, she took a hesitant look down at her body...
"Huh? Are these... Mine?" John put a hand to her chest, unsure if what he saw was real. "W-Wait, my voice... And-!" She continued to look over herself, seeing her new, slender frame, shapely legs... Everything that changed! "I'm a WOMAN!?"
"I'm sorry, John! I-I'm sure we can fix it!" Carrie felt terrible about what had happened to her husband, she was already thinking of places they could go or people they could find to reverse what had happened... When she noticed that she could still hear the sounds of air escaping from John's body. She was confused, John had already shrunk down to his normal size, what could be happening?
"Listen, you! How long is this going to last? This is supposed to be our honeymoon and-" John marched forwards towards the vendor, clearly upset, when Carrie grabbed her by the shoulder. "Carrie, what is it? I-" John stopped mid sentence, her anger gave way to surprise when she realized that she was looking UP at Carrie! The transformation had not only caused her to switch gender, but also caused her to shrink! And... Carrie seemed to be getting even taller!
"Hehe, John... There's no need to get 'short' with the vendor!" John was not amused, but was preoccupied with keeping her clothes on! The deflation and shrinking didn't seem to extend to her outfit, and now her old pants were much too loose for her! To both their relief, John stopped shrinking a few moments later. Though John was now a buxom, cute and cartoonish young tomboy girl! Still dressed in her oversized old clothes, and less than five feet tall now! She barely came up to Carrie's shoulders now, when just earlier it was the other way around completely!
Yet even though the changes had stopped, they still had a lot of unanswered questions. What would they do now? Is this permanent? The two again turned towards the vendor, hoping he would have some answers.