DISCLAIMER: I do not own any of the characters in the following story. They are from the movie Grown Ups/Grown Ups 2 and thus belong to the owners of the franchise.

This is a work of pure fiction and is centred around Greg and his Mum, Roxanne. This will start by following the rough story line of Grown Ups 2, but then splinter off on a tangent as things become more intimate between the two of them.

WARNING: This fanfiction will contain a level of smut between two family members. If this is not for you, don't continue to read. If it is, enjoy.

Greg's POV:

I was in the shower, thinking about mum and how hot she is, when the curtain at my back was ripped away. Turning around I saw a stag staring at me and screamed loudly, causing the stag to buck violently and piss all over me. Hearing another scream, I glanced towards the doorway and saw my Mum standing there with a look of shock on her face, gazing at my nude figure. Screaming again, I covered my erect penis as best I could before she retreated, pursued by the deer. Sighing, I turned off the shower and, after waiting for my erection to die down, wrapped a towel around myself and headed downstairs in time to see the mailman get jump-scared by the deer galloping out of the house with one of Mum's bras hanging off its antler. Grinning as the mailman high-fived Dad about Mum's bra size, I watched as the deer tore into Becky's monkey, stuffing flying all over the lawn. Suddenly, I felt the towel loosening around my waist and realised with horror that thinking about Mum's breasts was making me hard again. Turning around I marched back into the house to get dressed, before heading off for the last day of school.

Later in the day, Roxanne POV:

I was supposed to be working, but instead I was sat at my desk, unable to get the image of my naked seventeen-year-old son out of my head. I obviously knew what puberty did to a person's body, but I had chosen to ignore its attack on my son. Now though, after seeing him completely naked and erect in the shower, I couldn't stop thinking about him. Shaking my head, I leant over the papers I was supposed to be reading, only for his penis to appear in my head again. In shock, I felt my pussy start to moisten and my nipples beginning to harden under my dress. Glancing up at the clock and realising it was closing time, I stood and began to prepare to go home, the decision already made. Tonight, after this party, I was going to see that cock again, no matter what the cost.

Greg's POV:

After meeting Higgin's new kid at school, he had persuaded me and Andre to go and hang out with some college kids. Whilst it wasn't a problem for him to blend in with his older looks, me and Andre were both pretending to be drunk whilst constantly worrying about being caught. However, I was currently being grinded upon by a girl in a skimpy bikini, so there were many positives to our situation.

After a while partying with the college kids, Andre tapped me on the shoulder and said, 'Our dads are up on the rock.'

Immediately, I gestured to a bush and we both crouched behind it and looked up at the top of the cliff, where our dads were now being harassed by a group of college boys. They disappeared from view and we glanced at each other, slightly worried about our parents. Then, out of nowhere, Andre's dad Kurt appeared, jumping over the top of the cliff, completely nude. A noise of disgust came from my right and Andre grimaced at the sight of his naked father. My slight amusement at his discomfort immediately vanished as my dad followed him into the water, equally naked. Shuddering we both turned to each other.

'What just happened?' Andre asked me, horrified.

'I just saw my dad's dick', I replied, equally shocked, trying my best to forever erase the image from my brain.

Andre spoke again, breaking me out of my thoughts, 'We should go. We don't want to be late for that party.'

Nodding my agreement, we both turned and, apologising to the college girls who tried to make us stay, made our exit.

Thanks for reading, all reviews are appreciated. Chapter 2 coming soon: a party and some steamy action between a mother and her horny, well-hung son.