what the fastest you have cum through sexual intercouse with a woman?
My first time was nearly instantaneous, if you don't count all that kissing and making out time beforehand!
I was not quite 15. My gf and I had been making out for a long time, gradually getting more and more naked. We were both stripped to our waists, and I was sucking her nipples while sort of grinding our crotches slowly together. My dick had been pointing down in my briefs. I had drooled a lot of precum (still do), and my shorts were really wet.
I think it was the act of getting off of her, unbuckling my belt and unzipping my jeans, that got me really started. My dick was tenting out my briefs even more as I dropped my jeans...then as I slid my thumbs under the waistband and began to pull my briefs off I started cumming big time. Must have been the pressure lessening on my dick after all that dry humping.
My gf didn't really notice. I just paused in my undressing for a few seconds, then peeled down my jeans and briefs (most of my load was absorbed by my already-wet Jockeys), and unrolled a Trojan onto my cock...she guided my dick into her vagina, and I had sex for the first time.
It was better than I'd ever hoped. (Good thing I had a bunch of condoms I'd nabbed from my older brother.)
I'm a bit more in control these days. But my first time was just Too Exciting for me to last very long!