With the water shortage, my stepdad suggested we take a shower together. I was hesitant, so I wore my bikini to cover my body, and I was right to do so. He started jerking off! At that moment, I could have left. I even offered to look the other way, but his moans were tempting me. Then, I finally looked at his cock, and it was bigger and fatter than I thought. My pussy was so wet, I had to do something about it, so I took my bikini top off and offered him a deal: I could help him masturbate if he helped me too. I knew he wouldn't say no to my young, perfect body, but just touching each other wasn't enough. I needed more, and I was determined to get it next time. If we shower together again, he'd better be ready to bathe me with his cum.