Aphrodisiac mixed with fertility in the vents.

The mother and son started coughing as a gas was pumped into the see through prison cell they found themselves in. Both noticed the air getting hotter in the room.

"W-what have you done?"

"Well, all I did was speed things up..."

Ultramom couldn't stop herself removing her costume, leaving her naked with her big tits and shaved pussy on display, meanwhile her son was going through the same ****, stripping to reveal his washboard abs and eight inch cock which was rapidly rising to attention at the sight of his sexy mother.

For her part Ultramom was getting moist at the sight of her sons big cock, thinking about what it would be like to just lay on her back and let him pound the ever loving shit out of her.