David the fly watches his son masturbate

“A-ha! Just as I suspected! That jerk is jerking himself off!” The little fly on the wall thought to itself. Jacob’s room was enormous compared to the little bug, but this didn’t stop the little speck of an explorer to creep closer towards the naked giant spanking his monkey.

It turned out that Jacob himself in all of his pudgy, overweight naked glory was also enormous compared to the little bug. “Ew. I don’t remember the last time I had such a close look at my son’s naked body. Was he always this fat? I gotta tell him to exercise something other than his weiner.”

And on the subject of Jacob’s wiener. It was huge! So that’s the gargantuan trouser snake his son had been hiding from him all this time. It was enormous compared to David’s, and unlike the previous comparisons that was before being transformed into a little bug. “Damn son, you sure make me proud!” David knew there was no way Jacob could see him, but he gave his son a congratulatory thumbs up. “...I’m still planning on getting you circumcised though.”

Jacob, completely oblivious to his father watching him, beated his meat to the porn video playing on his laptop. David couldn’t see the screen clearly and so he decided to fly closer and land on his son’s bare belly. Once he landed he had a clear view of the porn flick with which he could satisfy his... ahem... scientific curiosity.

David the fly’s eyes widened in awe. At his bug size it was like sitting in a theater. The computer screen felt like the biggest cinema screen he had ever seen. The video was showing a curvy ass getting barebacked. He had to admit it was kinda hot.

“Uffff...” His son spoke to himself as he jerked off. “I wish I was the one fucking those buns.”

“You and me both, bud.” The little bug on Jacob’s sweaty torso thought.

David was getting horny watching the hot video until he was surprised by an insectoid erection making an act of appearance in his groin. “Well, this is new...” Before long, both son and dad were pleasuring themselves at the same time.

“Damn... Fuck...” Jacob moaned. His torso was getting sweaty as he masturbated and David was getting lost in his own son’s body odor but, strangely, it didn’t feel awkward to the incognito dad. They were bonding in a special way, sharing an intimate moment between men. David had always wondered what would be to have a jerk off buddy and this wasn’t that different. “I should let him borrow my porn magazines someday, and he could share his favorite porn sites with me in return!” The fly rubbed his upper legs in excitement as it pleasured its penis with its lower ones.