The thought of this still turns me on.
When I was still in college, I met and started dating a high school girl named Lauren. We had great sex right from the beginning.
One evening when Lauren came to my room, we started making out almost immediately. She had a habit of taking my hand and placing it on her breast or crotch when we were kissing. This time was different. She grabbed my hand and put it on my crotch and started moving it up and down. Before I knew it I had my pants open and I was pumping my cock while she watched. Her eyes were glued to my penis while I masterbated.
In no time I started to cum on the bed. She smiled and told me that she really enjoyed watching me enjoy myself. The next time we were together she started the same way, putting my hand on my cock. When I started to masterbate for her, she said 'get up on your knees and beat off for your girl'. I was so turned on, pumping faster and faster. She leans over and whispers in my ear 'I want you to drink it for me baby'. I was so excited that I couldn't stop.
She had a small shot glass from her parent's liquor cabinet. She held the shot glass under my penis while I pumped most of my load into it. Then she raised it to my mouth and said 'please drink it'. I couldn't stop, I let her pour a big load of my cum into my mouth which I swallowed. She smiled and told me that she was turned on watching me drink my own cum. That was about twenty years ago, but I still think about it a lot. I would even like to do it in front of my wife, but I don't know how to bring it up.