While sleeping, the pajama was hard at work.
The magic immediately found that you were too old and quickly reversed the aging that had taken place. A 16 years old boy became 7 years old in mere minutes. Then, it found the pampers, the written number, and made sure that you wet the bed every night until approximately 25 or older. One may have looked at the boy in the bed and thought he had always been 7 years old. The pajama also found that the diapers had already been wet and messed. This was rare for a seven years old boy, but the one in the bed was still mostly in diapers. It could not decide if the boy was absolutely incontinent or if potty training was incredibly slow. It made that the boy was still potty training, a hard process as he had trouble focusing on his bladder and bowel. It was hard to feel when he had to go and how to hold. It was slowly coming, but if he decides to drop it too quickly it would be impossible to continue potty training and he would end up incontinent.
Unlike his peers, his underwear was exclusively diapers, but like his peers, his clothes were childish. The boy was also very talented, more than when he was old. This was probably to make up the difficult fluid control. After several hours, the bedroom was changed to fit the new seven years old boy. And finally, the whole world but the former teenager forgot he was once older.