Explanations continue

"You got me covered, alright." Seeing the cum sliding down her skin, her forked tongue elongated out, and sucked on the areas where it dripped. Pressing her giant tits together, she made sure not to miss anything.

"!!!!" The alien biology turned Jack speechless, no matter how many times he saw it he couldn't get used to it. And supposedly, he had one too.

"Mmmm" Sticking his own out; just like his mom's. He had the same feature. It was really weird.

He really wasn't human anymore. The thought scared him.

Turning to look, his mother was almost finished. She hated the feeling of being unclean. The thought of his mother ingesting his seed willingly, crossed all sorts of taboo boxes for him. One of his dark fantasies had come true.

And to think. She didn't even bat an eye. This was too good to be true.

" Good. As you can see, our tongues can be used to gather fluids more efficiently." Fondling the nubs of her tits, a wet stain puddled at her folds as she informed Jack of the true use of his tongue.

"Alright. Scoot closer Jack. I need to be able to touch you to explain this next thing." With a brisk tone she commanded him as if he was dillydallying.

" Yes... No.... A bit closer... Jack! Quit playing around!" Finally having enough, she grabbed both his thighs and pulled him flush up against her navel. His balls were now resting on her pierced bellybutton. That left his cock straight up against her stomach. Even the tip was snuggled inbetween her jugs, having the head the only thing visible.

"Perfect!" With a satisfied smile she began to explain. " The reason for our belly addition is a signifyer of our family. Call it a clan symbol. That's not all. It's also used for sexual stimulation and the main tool for mother's to measure their son's length and girth. That still rings true now, Jack." Eyeing his face and bulging cock, she patiently explained their species customs.