She washes his cock

"Well now, look at what you did to this ole lady's tits," she said, looking down at her big black titties, that now had sticky white sperm sliding down them, "I guess there was a lot of pent up frustration in there, huh?"

The 19 year old stud just looked dumbly at his own dark member, which was still gently secreting sperm like a not quite dormant volcano.

Whilst he was still in some amount of shock at what he had done, Beth seized her chance:

"Here, son," she said, "let momma Beth clean that up for you."

The, quick as a flash, Beth dived down and took the 19 year old's big black cock into her mouth and proceeded to wash it clean with her tongue.

Billy watched in amazement as the old lady's grey-haired head bobbed up and down on his still stiff cock. And he felt the pleasant sensation of her tongue washing around its tip. But this time he didn't protest.

"Uh, ma'am..." he asked at length, "are you licking up my... er... my seed?"

"Mmmm, mmmm," came the muffled reply

"What does it... I mean, does it... does it taste nice?"

Eventually, the 55 year old lady looked up from the young man's lap.

"Truth is son, it tastes like shit. But I take a pride in my work an' I always clean up after myself. You think your young lady's gonna do that for you when your wed?"

"I... er... I dunno, its not the kind of thing you can ask."

"Hmmm, well you had better find out. Young'uns today got a habit of deciding for themselves what they should or should not do. I think it oughta be in your wedding vows myself: Instead of 'do you take this man in sickness a' in health?' it should be 'do ya spit or do ya swallow'. An' if she says 'spit', you gotta run like the wind."

With that, Beth turned back to milking his cock with her mouth. Before long, Billy felt the life return to it and Beth began sucking in earnest.

"19 year olds," she smirked, "just gotta love 'em."

Then she returned to sucking on Billy's cock. Billy, for his part, just lay back and enjoyed the sensation of her riding up and down is shaft, her teeth gently nibbling it and her tongue washing all around.

They were both so engrossed in Billy's pleasure that they didn't hear the car in the driveway, or the front door opening, until a voice cried out:

"Billy!! What in the name of the Lord do you think you are doing!!"