My first time was at a very early age. A brother/sister neighbor had come over to play. The person watching us had gone to the bathroom and the three of us were unsupervised. We got curious about each others privates. Us boys wanted to see the sister's pussy to start. She shyfully pulled her shorts down. We all started to explore each other with our shorts off. Then, in an instant, we heard a toilet flush and we all pulled our bottoms up. Supervisor never knew and we all had our naughty secret.