Bob grabbed a rag and cleaned off his cum. After he left the bathroom spotless he rinsed the rag and threw it away. "Now where is John..."
Bob found him in his room putting on some underwear. "Wow daddy this underwear is weird" He said as Bob gasped. It was a jockstrap Bob wore when he had "me time". It helped himself pleasure much better but would John react the same way... "Daddy for some reason my pee-pee feels funny" Bob sighed. It was his body after all.
"OK son let me give you this" Bob pulled out a bottle of lubrication and poured some on his old dick. "Now rub slowly..." He said. "Don't worry Daddy I've already tried this" "Wait what?" But John didn't listen as he rubbed continously until... "here I come!" Bob wasn't looking when he accidentally got a facial. "Sorry daddy" John said. "It's fine" Bob said cleaning himself with a towel.
"Now finish changing while I go to your room" Bob said. "And take off that jockatrap" he said as John began placing it back on. Bob went to John's room and found the usual briefs awaiting him. He put them on and felt the odd satisfaction as they filled up due to John's baby fat. "Man I kinda miss briefs a bit" Bob said rubbing his new butt.
"What am I doing? " Bob quickly shook his head and put on a superman shirt with some shorts. "Man I'm so tiny" Bob looked at his thin arms and small stature. The door was taller than him by half. "But what about..." Bob looked down and opened his briefs. There layer his tiny new dick. Even with the adult images he conjured and thought it wouldn't get up. "Daddy are you trying to make my pee-pee big?" Bob looked at his son and gasped in shock and began turning red.
But he also noticed that his son had put on some old pajamas he kept. "Why are you wearig pajamas" Bob asked. "Since I have to go to sleep in... wait a minute" John grinned. "I don't have a bedtime anymore" He laughed. "Yes you do young man" Bob said but in John's voice it sounded frail and weak. "I don't take orders from my son" John giggled. "Fine you can have a later bedtime" Bob said appealing to his son's demand.
"Thanks daddy now how do we change back?" John asked.
Bob ran downstairs to the family computed and typed in:
Body Swap with Son
But all that came up was :
DID YOU MEAN BODY SWAP WITH FAMILY?
Bob clicked the link and was lead to a page describing a phenomenon that cause two members of a family to swap. "To change back each person swapped must... " Bob stopped. "Experiece Sexual pleasure in their new bodies?" Bob frowned. Now there was no way he could swap back. Not while he was stuck in a body full without raging hormones.
"There must be some other way...." Bob began thinking. "Obviously John has already fulfilled his part but how do I?" Bob began to ponder this when the door opened and in came his wife. "John what are you doing on the computer this late? Go to bed! You have school tomorrow" She reprimanded him. "Wait but I-" But Bob was slowly pushed to the stairs.
"Now go to bed" Bob grumbled. He would need more time perhaps even 5 years or so but he couldn't be stuck in his son's body for that long. "What way is there...?" Bob walked upstairs and found John playing with his toys. "Hey daddy do you know how to fix it?" Bob nodded. "Yeah but it may take some time" But John jumped up and down. "Yay! I get to be dad for a while" he said grinning, Bob sighed.
"Be careful! Listen we're going to discuss a few rules..." So the two talked into the night about their new act as each other and there acclimate to new environment
After John had left with a warning to be nice to his "Mom" Bob climbed into bed exhausted. Tomorrow would be another day in second grade. Except this time he was a 38 year old man trapped in his son's body. Maybe he would finally come up with a solution to reversing this ordeal by then.