After the presents were opened and your mom took a look at the photo editor it was time to blow out the candles. Your father took a camera and put it on a tripod and was going to take a picture right as your mother would blow out the candles.
You said "Now blow out the candles and make a wish."
Your mother nodded her head and thought of her wish and thought "I kind of wished that John (you) was born a girl like we thought he would". she thought this mostly due to her remembering the first few birthdays she gave you and kind of wished there were more princesses and whatnot. She did have a girl that was supposed to be a boy latter, but she still wanted you to have been a girl. However that did not change the fact that she blew out the candles and your father snapped a picture.
You said "Hope your wish comes true M..." you covered your mouth and then looked at yourself just like your family did. What you saw was a dress covering C-cup breasts, but what your family saw was a girl with long black hair about your age materialized where you were. Still a little stunned you asked "Did you wish I was a girl mom?"
she said "...maybe once or twice at one point. I wasn't really thinking then..."
your 7 year old sister megan said "Mommy... please don't wish me into a boy..."
she said "I'm not... no idea what is going on..." As the chaos settled down you went to your room to calm yourself down and your mother retrieved the photo from dad's camera of when you turned into a girl. You were still a guy in the photo and your mom decided to mess around with a copy of the photo with the photo editor. It could either edit a physical photo or a virtual one, but this picture being virtual was copied and she didn't want to ruin the original.
You kind of went to your mom and said "mom mind if I borrowed... you messing around with the photo editor?"
Your mom said "yeah... just going to mess around with the photo a little. What did you need to borrow?"
you cupped your breasts and said "I'm kind of only wearing my old underwear and a dress. I kind of need a bra for these boobs." you went to see what your mom was doing and you saw her click a ying yang sign and then the symbol replaced the mouse cursor. She then clicked on your male form and then you were replaced with the girl you are now. both your eyes widen and said "...wait... do you think?.. How could a simple editor know what I would look like exactly as a girl unless.."
your mother said "sorry John... I didn't know i'll change it back immediately"
you shout "WAIT!"
"what?!?"
you explain "Keep that photo the way it is. It has been only a bit of an inconvenience being a girl for now, but with the edited photo we learned what this photo editor can do. I'd imagine that it changes us at the moment the picture was taken. So if you change it back we know nothing. Just take another picture of me and change me back with that picture so we don't forget what this editor does."
your mom said "good thinking." you both went to the camera your dad left in the living room.
you said "well how about we take a picture together? I should be back to being a guy once we have taken it."
your mom said "sure let's honey." then you put the tripod up and set the timer. You smiled with your mother as the picture was taken, but what happened?