I went on a hot spring trip with my mom and aunt... "It's okay because we're kids," my aunt said, leaving me alone in the women's bath. But then the women came in and I was surrounded by their breasts and got a full erection... My aunt noticed and started secretly stroking me in the bathtub! Spurt! Since my penis was still throbbing, I put it in my aunt's nice hole and spurt! My aunt and I couldn't stop getting excited...