Bart Simpson is always getting him self in a mess or just simply messy. Marge was just getting a little sick and tired of Bart getting his clothes dirty more times than a mud wrestler. “Bart, these are the very last clothes that you have. So do not get them dirty do you hear?” Bart was not very fond with being told off by his mother. “Yes Mom.” Marge was not really convince Bart had meant it, so just to make sure she got the message clear, she added.
"I really mean it Bart. You are not to get your last and only clothes dirty, because if you do, I have given Lisa full permission to put you in what ever clothes she sees fit to put you in and you wont be getting those dirty either, as you will go with her to her friends house and play with all of the other girls at the all girl party she is about to go to. So you have been warned.”
"Like as if that is ever going to happen.” Retorted Bart, Marge was close to losing her temper, but decided to let Bart's s******ing remark, go. “Don't worry Mom, I wont get these clothes dirty.” Bart added and went out to play. But it was not long before he came back with mud all over his clothes and he needed to use the bathroom. Homer was working late shift, which meant that Marge was left in charge of Bart and Lisa.
Bart went running right upstairs, making sure not to be caught seen being dirty already. He got to the bathroom and took hold of the door handle to open the door, but the door was locked. “Lisa, is that you in there?” Shouted Bart, realising that, that was a stupid question, what if it had been Marge in the bathroom? Bart gave a sigh of relief when he heard Lisa reply. “Yes it is, what do you want?”
"I need to pee Lisa, like as of now.”
"Tough, you will have to hold in Bart I'm not finished with using the bathroom.”
"But Lisa, this is an emergency!!!” Screamed out Bart, trying to hold himself down below, in a desperate attempt to prevent himself, from wetting himself. “Bart are you a big boy or a Sissy?” Bart was shocked to her such a remark from his sister. “What? What is that supposed to mean?”
"It means two things. One: It means if you can not hold it long enough, you are a Sissy. Two: If you actually do wet your self, that means you are a baby too.” Bart was not about to be talked to that way by his own sister. “Who says?” Replied Bart, trying to sound clever. “Oh come now Bart, everyone knows that, and I have even heard you say it your self to that new boy at school only yesterday ago.”
It was a Saturday morning, and there had been a new boy at Bart's school who had problems with his bladder, everyone all made fun of him, including Bart. Lisa was ashamed to have him as her brother, as she had witnessed the cruel remark to the boy. So it was justice for her to be using Bart's own words against him. Bart was not happy about that, but so shocked to hear his own words being used against him, that he lost control, before Bart knew what was happening, he was wetting himself uncontrollably.
"Oh man!” Remarked Bart in shame and disappointment with himself. “What now Bart?” Replied Lisa not too pleased, thinking Bart was trying to slow her down and make her miss the all girl party she was trying to get ready for. “I've just wet my self.” Replied Bart in utter dismay. Suddenly, the bathroom door immediately opened and Lisa came out and saw a sad red faced Bart stood before, her, she then looked down at the carpet floor and there was a big sized wet spot there.
Lisa's eyes suddenly lit up. She had remembered that she had full permission to put Bart in any clothing of hers as she saw fit for him to be put into. She had an idea of what exactly the kind of clothes to put Bart in, he refused at first of course, but Lisa threatened to tell Marge and about also what had happened at school. Bart somewhat reluctantly agreed to wear the items of clothing Lisa had in mind for him to wear. It did not take long for Lisa to complete Bart's new transformation. To which there was a full length mirror for Bart to see himself in. He was not happy with what he saw.
"Quit your complaining Bart.” Replied Lisa, in between fits of giggles. “Don't forget, I can tell mother any time about you know what. This whining though only proves one thing.”
"What's that?” Asked Bart in shame. “That you are just a baby after all. From now on I'm going to call you Baby Betty.” Bart felt like objecting, but knew it was pointless to do so. Soon Lisa had gotten ready her self and took Bart with her to the all girl party where all of the girls there loved taking photographs of Baby Betty and lifting up the skirt of her frilly dress to get a good look at her cute and adorable frilly plastic panties and taking photographs of those too.