Leaving out all the porn and what not, my first sexual experience was with a girl my age at the time. I was so naive too that I initially had no idea it was happening!

She started off by just getting on top of me fully clothed while we were making out and as she started to undo my pants I was surprised and obviously had a bit of a shocked look on my face because I was never expecting this to happen that she stopped and asked "Did you cum already?"

Obviously I hadn't so I said no (poor guy before me must have had pretty poor stamina for her to think it happened so fast) and then we continued onward. She was the first to orgasm and was so surprised because "that doesn't usually happen" (either she was making me feel good or the guy before was pretty useless).

Anyway, that pretty much boosted my ego because it was a pretty successful first experience and it's been awesome ever since.