[Hyenadog]

Tobias was afraid to touch himself, but he did unzip his jumpsuit to expose his hardening cock. The ridge down the underside was more pronounced, filled with muscle for working his offspring down the long birth canal. The head had also changed, the slit being more pronounced, spreading open as he grew harder.

He lifted a shaky hand, brushing a finger along the slit. He gasped at how sensitive it was, not even thinking as he slid a finger into the opening. "Oohh, fuck..." he moaned, jerking his hips as a thick spurt of pre lubricated the canal. He started moving his finger, faster and faster until he was shaking and panting.

His orgasm hit hard, the force of his jizz pushing his finger free as long ropes of cum shot across the room. He flopped back, his foot long cock slapping against his lower belly.

The aliens were pleased, preparing to come in and force the two men into heat and inseminate them with their own seed.