"I know just what to wish for, since I spent all my time taking care of you I'm going to make it so you will have to take care of me" he grinned before saying out loud, "I wish I was a three year old toddler who still had his adult mind."
Seconds after the last word left his lips Mark felt himself begin to regress in age, his body shrinking. It happened quickly and less than a minute later he had gone from an adult to a naked three year old standing in a pile of oversized clothes. Mark giggled at his new chubby baby body while Jesse had her mouth open in shock at the fact her husband just turned himself into a baby. Noticing that he was missing a certain key article of clothing for his new age Mark made another wish.
"I wish I was wearing a diaper" he said and seconds later a disposable diaper magically appeared around his waist.
Grinning to himself Mark then began to walk around as he quickly got used to the feeling of his crinkly padding as well as enjoying the sounds it made when he moved. What his wife didn't know was that it was always a fantasy of his to go back to being a baby again. He didn't want the responsibilities of being an adult but instead the carefree life of a baby. He wanted endless playtime and to be fed from a bottle and to pee and poop in his diaper which someone else would then change.
Remembering his flabbergasted wife he stopped and looked up at Jesse.
"Alright now its time you took care of me" Mark said in an authoritative tone,
"You can start by..."