This happened back when I was between the ages of 9 and 13 with a friend who lived on my street. I spent a lot of time over at his place and if I was there later at night his mother had him take a bath. He was a year younger than me and he also had a sister a couple of years younger than him. When he had his baths it was him and his sister in the tub together. I always went into the bathroom while they were having their bath and talked to them. I wasn't naked but they were and looking back always wondered why his mother didn't make me leave given that his sister was in there naked. This went on for years and they didn't seem to be concerned I saw them that way.

One time my parents were going away for the weekend and I was going to be spending the weekend over at his place which I never had before. His mother mentioned it was bath time for us and to get undressed. I was 13 years old and thought she was talking to my friend and his sister but when she mentioned "us three" I knew it was including me. It was one thing to see my friend and sister bathing naked each time but now having to be naked myself made me nervous. I was an only child and had only been seen naked by my parents and a couple of aunts but now a girl was doing to be seeing me and my friend's mother. I asked if needed to have a bath and was told yes by his mother and to get undressed. I think she could see I was hesitating, and with my friend and his sister now naked, she came over and began undressing me herself. Soon I was naked like them and having them see me this way for the first time ever. His mother ordered us into the bathroom and told me since the tub wasn't big enough they would be bathing first and once they were done I could go in. I stood outside the tub like I normally did when they bathed but this time I was naked and felt really exposed. Their baths always lasted close to 20-30 minutes and after about 5 minutes I finally began to feel less exposed and relaxed. His mother would come in and check on us regularly so the door to the bathroom was just left open. Then something happened to make me feel very exposed and less relaxed.

I heard someone come home and I was still outside the tub naked with nothing to cover up with. His mother was in the bathroom with us at this time and mentioned it must be Jenny. Jenny was my friends older sister who was 17 years old at the time. She came to the bathroom and began chatting with her mother where I was standing fully exposed. I was hoping her mother would send her away but she didn't. To make matters worse, and less relaxed for me, when Jenny came home she had 2 girlfriends with her. I was literally exposed to 3 girls and her mother said and did nothing to help my cause. They were chatting for a few minutes until they finally left. My friend's mother told my friend and his sister they were done and it was my turn. They toweled off and left while the tub was drained and refilled for me. My friend and his younger sister came back to chat with me while I had my bath but they were in pajamas now. My friends older sister and her girlfriends came back too. His mother came back and for the very first time mentioned that everyone needed to get out to let me finish my bath. My friend and his younger sister left but the others mentioned they needed to wash their hands. His mother told them to do what they needed and left. I now had 3 girls spending more time looking at me than washing hands. They finished washing there hands but stuck around talking with themselves and me. One of them asked if I needed a hand washing my penis. His mother had just come back and heard her say that. I was expecting his mother to tell her it wasn't appropriate to say something like that but she didn't. She told them I was a boy and yes that I did have a penis which all boys have. She said she doesn't knows how many, or if they had even seen one before, but except for different sizes that's what they basically look like. She told them I only had another 5 minutes left in my bath so they better get all their looks now and she then left the bathroom. Five minutes later she came back with a towel and told me to towel off and once again left. I toweled off feeling very exposed as 3 girls watched as I did. The girl who earlier asked if I needed help washing my penis said I had a nice bum. The girls chuckled a bit and pointed below as one said "Oh my god its getting bigger". The mother had just come back and heard what she said. She told them boys get erections and said they had seen enough for now and told them to leave.

I toweled off and finally got dressed. The mother asked how I felt being seen naked by everyone especially the girls tonight. I told her I didn't mind so much with my friend and his younger sister seeing me as I had seen them but felt very exposed in front of the girls. She mentioned being seen naked by some girls should not have been a problem for me. She mentioned I had been seeing her younger daughter naked for years and it was only fair that someone finally got to see me the same way. She said she she noticed when she first asked me to get undressed for my bath I didn't seem like I wanted to and that she had to do it for me. I admitted I didn't want to because I was not used to being naked in front of others. She told me if I had brothers and sisters I wouldn't be as concerned about it because chances are everyone would have seen each other naked regularly and it would be no big deal being seen naked. She then says this weekend I was part of their family and that everything was all good and not to worry about any of it.