When I was in my late teens I went out of state to stay with an older cousin for a few weeks in the summer. I always thought her husband was sexy. One night they got into a fight and he slept in one of the spare bedrooms. After everyone was asleep I couldn't help myself and I went into the room and slipped under the blanket. He was sleeping in his boxers so I took out his member and started sucking it. This was the first time I've ever done such a thing. I wasn't prepared for how much he grew in my mouth and how much that sensation turned me on. I couldn't help but moan and he woke up. I stayed under the blankets and quickly realized what was going on and ran his fingers through my hair, thinking I was actually my cousin. I didn't know what I was doing but apparently I was doing something right and I tried to make it last because it really was quite the turn on. Suddenly, his body tightened and he held my head in place and erupted in my mouth. I couldn't help but moan and kind of giggle as I quickly swallowed it down. I remained under the blankets, still licking and gently sucking on his member until he mentioned that it was one of the best orgasms he ever had. I knew I couldn't risk him saying anything to my cousin, so I came up from underneath the blanket. The look on his face was priceless and his eyes got really wide. I quickly put my finger to his lips to stop him from saying anything and leaned in really close to his ear and said "Thank you" and kissed him on the cheek in the most sensuous I could think of at the time. When I slid off him, I pressed my crotch against his semi-hard cock and gave a little moan. I looked back over my shoulder when I left the room and he was still staring at me silently.
