Family saw me naked


So this happened to me when I was fifteen. My parents and sister were out at the store so I decided to take a shower. When I was done I realized I forgot a towel so I went out to my room. I kinda liked being nude so I went downstairs to get something to eat, still naked. While in the kitchen, my mom dad and sister (who is sixteen) all walked in. I covered myself immediately, but my mom told me to stop since we are family and we have seen everything at one point or another. I obliged reluctantly. Now my penis was very small when soft, but average when hard. My sister started to laugh and my mom started to touch my penis. She said she was just checking to see how my growth was coming along. After that i went back up to my room and got dressed. That experience was totally mortifying