I used to sneak my brother’s cloth diapers and plastic pants up until I was age 7 or so and he was out of them. I don’t remember being caught with them, but wouldn’t be surprised if my mom knew as I wasn’t the most careful in hiding them and sometimes I had hidden one in my room only to find it missing later. They had Pampers disposables for him when we were traveling, and those were a rare treat for me to take and wear. One time I was playing in my room at my grandparents lake cabin with a Pamper on under my pants. I had just wet it and before I had a chance to change, we were called to lunch. I sneaked to the table without it being noticed, and sat with the family in a wet diaper hoping not to be discovered. I think I got away with it.
One time I did get caught was by my aunt. My cousin and I found some diapers and plastic pants in her attic and made a “diaper dare” to put them on and wet them. We hid them in her closet afterward and she was going to sneak them into the laundry, but her mom discovered them first. She got in trouble, but I don’t know if my aunt told my mom as she never said anything to me about it. The thing I definitely was caught doing was after my brother was out of diapers, I used to take his thick trainers, wet them, and then let them dry under the bathroom sink before slipping them into the laundry hamper. One day I got daring and pooped in them too, and my mom found the stained pair under the sink. I tried to deny it was me, but she knew, and also suspected the wet ones from the laundry were from me and not my brother. She thought I was having accidents and not telling her but was curious why I was wearing the trainers and not my Fruit of the Looms. I don’t remember my excuse if I even had one, but was told not to take the trainers, and if I had an accident, to tell her and not hide the wet undies. I didn’t volunteer that they weren’t accidents.