Author's Note: All characters in this story at are least 18 years of age, and, even in role play, are "playing" characters at least 18 years of age.
***
When I told my Son, now legally an adult at 18 years old, that he could have anything he wanted for Christmas, I knew full well what the possibilities were. I mean, despite how slick teenage boys may think they are; the truth is they wear their lust like a tattoo on their forehead. But, I'd been thinking about it for some time by that point. I mean, he was hard around me, ALL, THE, TIME... it was impossible not to figure out why. And from there it was normal to guess at what he masturbated to, and from there... well, a downhill slide of dirty and highly inappropriate thoughts that, eventually, I was masturbating to as well.
Still... He'd been almost disappointingly good about his request. I mean, there I was tormenting myself with questions about how far he might take it, and what if he asked for something illegal, or involving pets, or a large group of his friends... But, after I'd stressed the word "anything" for about the 6th time, he'd mustered up enough courage to ask if he could cum on me for Christmas.
It... it was so simple. Hot! Don't get me wrong, still hot. I mean, I'd be lying if I said that I hadn't fantasized about walking in on him masturbating, taking my top off, hitting my knees, and telling him exactly where to put that load... But, I don't know, I thought a boy his age would swing for the fences.
Still though, my throat was so dry as I kneeled on his bedroom floor that morning. His Dad was downstairs watching t.v., lunch was in the oven, and I was naked and playing with my big tits while my Son stroked his huge cock right in my face. I was overcome with how hot it all was, and I was tempted to ask him if I could take it down my throat... if only just to ease that parched feeling that was coming with the anticipation of our big moment.
And then it happened, and, at first, it was so hot that I actually came a little. It made me cum! I came, just from the feeling of his hot cum splashing on my naked flesh, as he bit down on one hand, and moaned out "I'm cumming Mom!" in a harsh whisper. But... he just kept going. And I mean, he kept going, A LOT! Load, after, load, after load. And huge, splashing shots that splattered all over my face, and ran down my lips and off my chin. And then more as he aimed for my tits, and as I tried to wipe some away he came on my hand, and in my hair, and it splashed down on my legs, and just, Oh My God!