My favorite sexual encounter? It was when I was 20. I'm about 6'0", 180 lbs, not fit but not fat, curly brown hair. My girlfriend was about 5'4", 110 lbs. maximum, B cups, and an awesome ass.
I was staying at college over the summer, and my girlfriend since high school came up for the weekend. We went out on Saturday night, bar hopping, trying to find a place that would take our brand new fake IDs. Finally we found this empty sports bar, and spent the next few hours getting good and tipsy.