The next day and a half on the cruise ship passed normally--activities, shows, food, and hanging out. I was almost amazed at how normal it felt, even though I kept replaying the formal dinner night in my head. My mom splayed out with her legs off the bed, torn open pantyhose, cum dripping pussy... I had to shift myself often through the days whenever it came to mind to hide the hard on I would get.
The night in between, my wife and I had some fun as well. She brought black nylon stockings, though I can't say my mind wasn't half on my mom as I plowed into her. At one point I had her against the wall fucking her pussy from behind. I secretly hoped my mom would hear her moans through the wall next door. She managed to get me back on the bed and I came in her with her nylon clad legs wrapped around me.
The second to last day included a beach day, so we all got off the ship and took the short walk to reach the beach. My wife isn't a big water person, and my mom's fiancé being mostly regulated to the wheelchair basically went in and back out again. So it was mostly my mom and I in the water. We'd chat on and off about random things and drift nearer and farther apart on occasion. The water was super clear, but at one point when there wasn't anyone else around, she grabbed ahold of my package through my swimsuit and said, "And how has this been?"
"Still in amazed disbelief."
"You were leaking out of me for at least half of the next day."
"I think that was the hardest I've ever come."
"It might have been for me too..." she said.
"I haven't been able to get it out of my mind. Last night I asked for my wife's pantyhose to jerk off in while she licked and played with my nipples... I thought of our night the whole time."
"Should you be telling me this," my mom said, half teasing. "I'm not sure I knew guys liked that kind of thing-your nipples I mean."
"It was kind of a discovery for me with her. But I've been using pantyhose to jerk off in since I lived at home," I said giving a knowing smile.
"So you told me. Is there anything else I should know about?"
"Well... I did hear you having sex one night. Until two nights ago it was the most amazing sounds I've ever heard." I continued, "And I may have snooped and found your purple lingerie that looked like it may have covered, like, your nipples and that's about it."
She gave me a slight disapproving look for the snooping, but then said, "Well I certainly couldn't wear those anymore as fat as I am."
Now it was my turn to give a disapproving look. "You're not that bad. And I'd still take you any day."
She gave me another squeeze then let go.
"I'll be on the balcony tonight," and with that she dragged her fingers across my chest, making sure to rake across both nipples as she floated away.
----
We all knew we'd be beat from the sun, and everyone retired to their rooms for a nap prior to dinner. Later as the night drew to a close, my mom's fiancé said he was turning in, and my mom announced she was going to sit out on the balcony. My wife also indicated she was tired, and I had changed into a tank top and shorts for bed but said I wasn't quite ready to sleep. I told her she should head to bed and I'd keep my mom company for a bit.
As I walked out onto the balcony, I noticed my mom was standing at the railing looking out onto the ocean, wearing a white bathrobe as if she had just showered.
"I'm not wearing anything else," she whispered.
I moved in front her, and glanced from door to door at the rooms to make sure there was no movement from either my wife nor my mom's fiancé. I slid down with my back against the glass beneath the railing and slipped into the opening of her bathrobe to be eye level with her pussy.
She spread her legs apart to give me access, and leaned on the railing for support. Not wanting to waste any time, I started by running my tongue slowly down her slit. I gave some small kisses all around down there--her upper legs, her trimmed bush, her pussy lips.
After some more teasing, I then went back to her pussy and ran my tongue once again from her opening to her clit, this time pushing my tongue into her folds. I heard a small, sharp inhale as I could tell she was trying to stay a little more quiet than she seems to get when she was excited. I started to slowly circle my tongue around her clit as it swelled. As I gently took it between my lips, I also started gently probing at her hole with my middle finger. To my surprise she was already wet enough to insert it most of the way.