Not longer after that Sarah's phone rang. Jon pretended to be immersed in the cartoon but really he was listening in. He could only hear her side of the conversation but as he was really a teenager he had a fairly good idea of what was going on.
Sarah answered the phone with a cheery hello. She then said, "Hey Moose. I'm babysitting for Miss Meadows tonight... Nothing much.... Just watching TV.... No, you can't... No, I'm serious... OK, fine but you have to be gone by midnight... Yes. Seriously... I'll text you the address." Sarah hung up the phone and started typing up a text. Jon knew from the half of the conversation that he heard that Moose, another jock from school and a friend of the old Biff, would soon be joining them. Judging by the way Sarah was smiling to her self and the flirty way she had spoken to him, he assumed Moose was now Sarah's boyfriend since Biff didn't exist anymore.
Sarah stood up and walked over to the mirror. She stood primping and preening herself for a minute. Jon watched on as she fluffed up her hair and adjusted her boobs through her top and bra. Jon dropped his bottle and toddled over to her. He tried to ask her to reconsider her plans but nothing he said made any sense. He was getting a bit worked up now, his infantile emotions starting to get the better of him. He felt a tiny bit of pee coming out into his diaper and he started to whimper a little bit. Sarah took this to mean he was hungry and so she brought him into the kitchen and heated up the dinner Biff had left for him. Jon was still upset but then realised that he was also hungry so he calmed down a bit in anticipation of dinner. He ate his food without any fuss and not long after the doorbell rang. Sarah wiped Jon's face and released him from his chair before going out to open the front door.
Jon hesitated for a moment. He was a bit nervous that Moose would laugh at him. He looked down at the cute dress he was wearing and beyond it to the diaper that was just peaking out of the bottom. He reminded himself that not one person had noticed anything unusual about him since this started so he followed Sarah out to the hallway. He saw that Sarah had opened the door and her and Moose were in the middle of a quick make out session. Sarah had her back to Jon and he could see Moose's hands roaming all over Sarah's body and then grabbing her butt underneath her skirt. Jon was shocked with how quick they had gotten down to it. He tried to say something to alert them to his attention but they just heard it as baby talk.
Moose stopped suddenly. His hand shot out from under Sarah's skirt instantly. Moose looked at Jon and then turned to Sarah and said, "Huh, cute baby. What do we do now?"
Sarah replied, "we just got to keep her occupied and then we can fool around some more." She walked over to Jon and picked him up, telling him that Moose was her friend and just here to hang out for a while. She was confident that Jon wouldn't be able to tell Biff either way but she wanted him to feel safe. She held Jon close to her breasts which he liked and she went into the sitting room. She sat on the floor with Jon for a while giving him some attention. They played with a few toys and Jon pretended to be enjoying himself. Moose followed them in and sat down on the couch, feeling a bit bored.
With Jon apparently settled, Sarah turned the TV back on and told Jon to watch some cartoons. Sarah the walked back over to Moose with a sexy wiggle to her walk.
Jon pretended to be giving all his attention to the cartoon but there was a small mirror on top of the TV and Jon could see everything that was going on behind him. Sarah had sat down right beside Moose and had placed her hand on his leg. They started with some soft petting of each others legs and arms which soon turned into heavy petting. Before long they had resumed making out. Jon was incredibly jealous but also felt himself getting a bit turned on. What he wouldn't give to trade places with Moose and get to be the one making out with Sarah. He felt his penis growing inside his diaper. It was pushing its way into the padding and he could even see it push the front of the diaper out a little bit. Knowing that the two lovebirds weren't paying any notice of him he reached down and started to rub his penis through the front of the diaper. He rubbed slowly, trying to remain quiet but the diaper was making a very faint crinkling sound as he rubbed it.
He kept his eyes glued to the mirror and saw Moose moving one hand onto Sarah's chest. He cupped and squeezed one of her boobs and started to lightly massage it. Sarah just moaned a quiet moan and said in a breathless voice, "oh baby, mmmmm." When she said the word "Baby" Jon felt his penis twitch and grow to full size. He was so used to being called a "Baby" all week that he was easily able to imagine Sarah was talking to him when she said it. He saw Moose growing even braver, obviously forgetting that there was a baby in the room. He ran one hand up Sarah's leg and under her skirt as he started to rub her through her panties. Jon was picturing the pink panties he had seen earlier and felt himself building to a climax. Sarah again moaned and said, "mmmmm. That's so nice baby but we have to stop for now." She pushed Moose's hand down her leg. At the moment she called Moose "Baby" for the second time Jon felt himself explode as he jizzed right into the front of his diaper with a grunt.
The grunt was a bit louder than Jon had hoped to be but the tone of it was still high pitched and babyish sounding. Afraid he had been caught in the act he started to turn red. He heard Moose ask Sarah what was going on and she whispered back to him, "I think she's pooping. She always goes red like that when she does a big poop." Both Sarah and Moose giggled a bit at the concept which further added to Jon's humiliation. At the mention of poop Jon noticed that he hadn't pooped that day but suddenly felt like he needed to go urgently. He was too embarrassed to stand up or even acknowledge the other people in the room so he just sat where he was and relaxed his muscles. He soon felt a poop coming out and filling the back of his diaper. Sarah was quick to smell the poop and excusing her self picked Jon up and carried him straight up stairs to change him before he got upset.
