I remember being a teenager and hearing two of my girlfriends talk about getting semen in their mouth, and I was very curious, but never had a chance until I gave a guy a handjob a year or so later.
We had been dating about a month, he was 18, and we were in his truck near the lake late one night with no one around. We were getting all hot and making out and much to my surprise he put my hand on his crotch and held it there.
I wasn't ready to have sex or do a blow job, but I was **VERY** ready to get my hands on his penis, and to experience this mystical semen that I had heard so much about. I stroked him for awhile, until he ejaculated all over my hands. There was quite a bit, looking back, and it was very stringy and clumpy-not at all what I had expected. I assumed it would be more like milk.
I was extremely curious (and quite horny), so I just started licking it all off my hands, between my fingers, under my fingernails and everything. I was pleasantly surprised; I thought it was very enjoyable.