John had directly changed each of his other family members except his 4 year old sister Susan. With the little time left to him John had the app pull up a sentence for her.
"Little Susan takes after her futa mother and has a small cock hidden in her underwear"
John read this and thought that it was wrong his futa mother should be big and impressive not small. John didn't want to give his little sister a bigger cock but he did want his mother to be more impressive than other parents. What John didn't realize was that the sentence only meant that Susan was a futa same as her mother Margaret. John unaware of the fact that his mother Margaret was already rather hung at around 9 inches long he changed the sentence from "small" to "huge".
After accepting the change John looked over to his sister Susan and was shocked at the size of the bulge under her skirt. It looked like she had a soft ball stuffed in her underwear. John then looked over to his girly brother Thomas and saw that he too had gotten bigger. He now wore a mini skirt over his plush ass and a blue an white striped tube extended out from under the skirt and rested between his legs. This tube was clearly filled with his long and slender cock that was easily 10 inches long. John looked down at him own crotch but was disappointed to see that he was mostly the same.
The biggest change in the car had to be Margaret. Before the change Margaret was wearing a two piece swimsuit that snugly fit her large cock and matronly breasts. Now Margaret had on a onepiece swimsuit with two baseball sized bulges in the crotch and a long bulge traveling up her torso to just below her tits.
John was about to use the app when the car came to a stop and he saw that they were already at the beach.
"All of you kids out of the car, and pass me your phones" said Margaret as she stepped out of the car.
"I'm going to drop our bags off at the cabin and I will be back shortly" said your female mother after everyone else had left the car.
John was now walking onto the beach with his family without the app. What happens next