... Erica actually felt a little pressure and said "Actually... I'm going to use the restroom real fast!" Then made a beeline to the bathroom. She reached and opened the door and slammed it. Erica thought "Alright then... " looking at her dress and then thought "I guess all I need is too... drop my panties and sit? Sure let's go with that..." then pulled down her pink panties with a smiling kitty print on the bottom then sat on the toilet after having just took off the dress not wanting to have to deal with it at the moment leaving her naked. After her deposit, wipe, and flush Erica noticed an odd dial on the side of the toilet. She thought "Well i have no idea what that is... However if we want to mess around with mom and dad... To get older they turned the thing to the right so to make sure i don't lose anything to death... let's turn it to the right." Turning the dial to the right the magic of the cabin reacted again. Erica moaned a little as the magic started to do it's job. The small girl's vagina started to grow some hair as her hips widened a bit, and some breasts started growing.
In the living room Nate the 5 year old boy got a stirring in his pants as his dick started growing several inches and get a little bit of muscle development with the extra testosterone.
In the bedroom the 21 year olds fucking each other started growing their sexual characteristics. Doug thrust in and all of a sudden his dick grew a few inches and got a bit more girth effectively having him push causing Sarah to moan as her breasts surged in size. Doug pulled out and said "Sorry... I think the kids are up to something..." another wave hit and Doug got even bigger and looking at his wife her tits and ass were growing as well.
Erica put her clothes back on (including a bra now) and walked with an exaggerated sway as the 4 year old had the curves of a well developed woman. going into the living room she asked "Well hello there hunk? Think this is good?" Seeing the 5 year old Nate with a large bulge in his pants and rather muscular she gave a half hearted air kiss.
Nate said with a pretty deep voice for a 5 year old "The two of us look so weird. I can only imagine what mama and papa are up to in there now."