Jenny smiled: "That was close to what I was thinking, but I want to try the lessons out. Change back to normal so I have a subject."
Disappointed, Tom shrunk back to his normal size, all the extra mass was sprayed out his penis into a silver puddle again. He stood still waiting to see what Jenny would do.
Jenny immediately vaporized, leaving a moving mist that approached Tom. He could feel fingers touching him everywhere, causing him to go erect. He felt his nipples go hard, but the next feeling was just wrong. He watched in horror as his pecs inflated into female breasts, a big, firm c cup on his male torso. He heard laughter as his aureole enlarged, his nipples popped out two inches and thickened. His new breasts swelled to E cups. "So do you still like breasts?" Jenny's voice boomed in his head. "Yes, but not on me." Tom willed his male chest back, his large nipples sprayed the extra mass back into the air. "Ok, try this for fun" Tom felt something warm enter his cock from the outside! "Like penetration?" He then felt something enter his ass. His rear end bulked up firm but large. The liquid entering his shaft was settling in his balls as they filled back up again. The mist disappeared as his balls rested on the ground in front of him, undulating and bulging. "Jenny, if you wanted balls I'd have grown them out." "No fair, I have to put the mass somewhere. You don't want tits, I like your tight ass, so I figured it would work best next to what you think with." "Well it is my better mind."
His sac shrank back to a large melon size as he wondered where the mass went. Shortly he got a raging hard-on as his cock stretched out two feet and hung heavy. His biceps swelled as his pecs enlarged. "You forgot clothes" His cock leaked precum again which became a large pair lycra jammers to cover his tenting cock and large ass. His nipples lactated until a tight white no-sleeve shirt formed on his upper body. "Do you want to try for something not gay?"
Jenny got pissed and stretched his cock out five feet. The prehensile cock pointed straight at his face. "Oh no, you wouldn't.." The cock swelled erect as it thrust into his mouth. "You daumnnned sllluuttt" got muffled as he found out what his balls were swelling with before. A torrent of two gallons of cum drained into his stomach causing his belly to bulge out. "Wanna try anal next?" The cock exited his mouth with a pop, "Hell no, quit it now!". His cock swelled into a six foot cocoon as he saw Jenny's form emerge, but the breasts were too small. "Ok, but you'll have to give me my tits back!"
The end of cock was still attached, seamlessly, to her pussy. His balls swelled again as all the excess mass emptied to her tits.
"Can we screw with the others?" Tom asked. "Hell yes we can -- you should replace all the girls clothes, I'll get the guys."