My Husband Weird Fantasy Brought Out Something In Me.

My husband and i went on a cruise last summer to celebrate our 26 anniversary.
It was a lovely cruise with memorable moments that we would never forget. One of the thing we enjoyed was what we called 'do as i say'.
It were designed to bring out our deepest fantasy without holding it against each other no matter what the fantasy is and we both agreed.

I went first and told him my fantasy is to see how far my 8 inch dildo could go up his butt.
He were a little reluctant to allow it but i reminded him that we have a deal no matter what. He then prepared himself mentally and that night i made him feel what i felt on many occasion when he's behind it .

Now it was his turn to bring out his fantasy and tell me what should i do.. but what he had requested blew my mind straight to mars. My husband weird fantasy is to see me 'FUCKING' our 19yo son when we get back and make him cum in my pussy... I told him 'NO WAY'!!!!, and ask him what on earth is he thinking to want me to do such a thing?
He then reminded me of our deal but i shut him down quickly and that ruined our wonderful cruise.

Months later it flashes my mind when i started to harbor the thought of what it would be like if my son had fuck me. I have read many stories of 'mom and son' which didn't excite me but within seconds of having the thought my pussy started to get wet.

It took me another 2 weeks to tell my husband about it which excited him. He then started to attack me to try it at least once and nothing more.
Now what we both know about our son is that he has a very big tool.
His dad has a 4" pencil which i told him all the time, but he (my son) has a 'Jack hammer'.
I ask my husband how would he convinced our son to even do that and he said i should leave that part to him.

Now one Saturday afternoon we were all at home when my husband popped out a champagne out of our wine stock. We started drinking wildly with our son who kept asking his dad 'what's the occasion?. 'He told him nothing special it's just a light moment to drink and feel chirpy' (his exact words).. Our son just goes with the flow where we all kept drinking a bottle after the other till my head were the first to start spinning.

The drinking continues until way past midnight where i could not continue. I quit drinking and went to get a cold shower then off to bed naked with a surprising wet pussy. Less than half hour later just as i'm about to doze i felt a tongue running straight along the split of my already wet pussy.
I wondered if it were my son but i did not want it to stop because of how it felt..

I then realized it were my son tonguing my pussy when my husband came to my ears and said "now do as i say and fuck that kid". On hearing that i immediately get off my first of many orgasm that night.
My husband then put his cock in my mouth as i feel both my legs started spreading and the biggest cock that ever felt then enters me.

I cried that night with pleasure. I was fucked hard by my son and his father in what could be called a 3sum until 4am in the morning. I awake at sunrise to see my son still in our bed with his morning stiffness that gets me horny once again. I wasted no time to straddle him and started riding him hard as the sound of my mourning awoke my husband.

After that night we were a little awkward around each other. We never talked about it until 2 weeks later when we all started drinking again. This time i fuck them both with my dildo and my son make me pay when he punished my butt with his cock.
After that night my husband then told us "that's enough fantasy", no more. But little did he knew that ive been fucking my son almost everyday under in secret.
My husband open up a can of worm for me and our boy.