"...fine, but we're going to change again!" Eric responded.
"Alright but we're doing stuff while I'm still male and your still female!" Maria exclaimed. Eric went to the mirror to check herself out, her nice skin. Quickly slapping her firm ass but still seeing the slight jiggle of the jutting out flesh... Then checking out her chest, squeezing them and checking how they swung and bounced as she moved. "Having fun with yourself dear?"
Eric checking out her pussy and seeing Maria's cum asked "The Sex Machine is infertile right?"
"Yeah why?"
"I think I'm going to take a shower... at least trying to get rid of some of that cum you left in me."
"Not like you didn't do that to me either." Eric grabbed some clothes, they seemed to be her once wife's but resized... Also it had a slightly changed style to it as well. The shower was nice, and helped familiarize Eric with her curves and make her body feel clean. When she got out and back in the bedroom Maria had changed into slacks and a T-shirt and had to help Eric get her breasts into a bra.
As the two went downstairs the kids were eating cereal and looking at their smartphones.
"Hey kiddos!" Maria said
"Dad?" John asked "...and mom, did the sex machine switch some of your features?"
Eric said "Yeah... But not stuff like our hair color or whatever. We seemed to have switched genders."
Kimberly said "Wait so... That thing can change gender? Even when the two people are already opposite genders? Wait, mom how would you describe having a dick in woman terms?"
Maria joked "Maybe if you bring home a boyfriend we may let you use that Sex Machine to fuck him."
"And you're alright with this dad?" John asked
Eric said "...Well it's not every day you can do this. I don't plan on staying a woman for long though, but your mom wants to experiment. And when we have the opportunity why not? Meanwhile isn't it about time you get going for the bus?"
Kimberly said "...Shoot I am! John isn't it about time you run to school?"
Thus with the two children away for a decent amount of the day the couple decided to...