"I'm saving myself"

"You're what?" Beth smirked.

I'm saving myself," Billy replied, "For Laura-Ann, the reverend's daughter. We said we ain't gonna do it until we are wed."

"Well now, ain't that sweet? But what a waste of this gorgeous hunk o' man-meat." Beth shook her head and gave Billy's cock another tight squeeze, "my, my, that feels good. Does that feel good to you? You didn't oughta keep this monster locked up. It needs regular exercise. Why I bet every girl in the neighbourhood would like to ride this big fella. Seems a shame to keep in locked away."

"Oh ma'am, please stop that," moaned Billy breathlessly - but he didn't move away.

"Laura-Ann, huh?" Beth continued, still squeezing Billy's hardness, "Pretty little white girl? Curly hair & glasses? Lord, I bet you can't wait for your wedding day. You'll be able to lift up that pretty white wedding dress, tug down those pretty white panties, then slide into that warm fluffy treasure chest. God yeah, she'll be riding that big hard cock o' ours and she'll be screaming with pleasure. I can just imagine it. When's the wedding day, son?"

"Um," muttered Billy thickly, trying to ignore what Beth was doing to his cock, "we haven't set a date yet. We've only just started seeing each other and we've got to finish college and all."

"Oh now, Billy boy, that is just a crying shame. You must be getting blue balls every time you go out with that girl. What with imagining her naked and wanting to plunge that big hard dick into her and wanting to cum all over those pretty little titties an' all. Let me help you out here son."

With that, Beth whipped off the tight little top she was wearing and her great dark breasts tumbled out.

"Wh-what are you doing ma'am," cried Billy in alarm.

"I'm gonna give you a good old-fashioned tit-fuck," the older lady replied.

"But I told you, ma'am, I'm saving myself," wailed Billy.

"Yeah, 'an I respect that. Truly I do. But this isn't sex, its just masturbation... with a friend. You do masturbate don't you son?" Beth asked idly fingering one nipple.

"Well uh, yeah, uh sometimes I do."

"Course you do son. Healthy boy like you has needs to fulfil. An' I just want to help you fulfil those needs...