Your parents had dropped off your luggage, it was getting a little latish "...Can you make me some dino nuggies?" Andrea asked trying to look cute.
"Sure" you said as you went to the kitchen to try and find the nuggies in the freezer. You just opened the bottom of the fridge where all the coldest air settled in the freezer section, rummaged through the contents for a bit seeing some veggies, meats, and finally the processed stuff and some ice cream. There were a bunch of dino nuggies so you got a large plate and dumped several on it. Then being a microwave wizard you put it into the microwave and blasted the plate for a few minutes. You went on your phone for a bit before your chest felt... tight. You looked down and saw your shirt being stretched by two mounds of flesh capped by hard cones which were steadily enlarging. Then the microwave stopped as did the growth of your... chest... boobs... They felt hot, and peaking inside it felt like you opened up a bathroom after someone had taken a shower. Warm, muggy... maybe a little bit of steam. Your new boobs also felt pretty hot... like you had just microwaved them for a few seconds... Another thought made you try to peak into your pants and thankfully your boobs weren't big enough to block your view of a hardened cock in your underpants. Your hand's went to your hot and warm boobs and then you remembered because of a reminder from the microwave the nuggies were ready, and you had a very non-sexualized kid waiting for dinner. Your T-shirt was not going to hide your nipples in any way, your navel was exposed thanks to the growth, and there was nothing you could do about the hot flesh. However you could tuck your dick as it unhardened... wash your hands... and then grab the nuggets along with some ketchup and hot sauce.
Walking back into the living room you asked "Andrea? Is this normal?"
Andrea looked and said "I think so... One of the reasons mom said I'm too young to use the microwave."
The breasts weren't that comfortable to move around with, and it wasn't like you could just grope yourself with Andrea around so the two of you ate some nuggets as you wondered if the microwave made you grow boobs what else would do what? The heat in your chest was dissipating and you noticed bit by bit your boobs shrinking back into pecs bit by bit, and when it came time to get ready for bed you weren't about to go against the bedtime rule if a microwave would make you sprout breasts.
Now that you thought about it the Growth chart, and "Don't fuck our daughter" rules felt more pragmatic if microwave boobs could be an everyday occurrence. Taking a shower the cold water seemed to cool your tits back fully into pecs and then... there were some soaps, shampoos, and conditioners you could use... Not right now though... You were having some distrust issues with your bodily autonomy. You were able to get yourself dressed in your pajamas as you found the cash card for your expenses, and the laptop... tonight would not be the night you used the laptop, but you were establishing your base. You fell asleep as your mind was preparing itself for the next day.