When I went to my aunt's house, I couldn't help but peek in while she was cleaning the bath. I was excited by the big tits and big ass of the aunt in her leggings. She found out I was peeking and made me help her clean the bath the next morning. She was trying to play a prank on me when we were alone. My erect penis was pressed against her big ass and we couldn't contain our excitement. I threw off her leggings and threw myself into her naked body, pistoning away like crazy.