There I was standing next to the pool chair where my Grandma sat with my erection straining under my Speedo as it inched closer to her face; vivid images of carnal incest flooded my mind as she rubbed her pussy and licked her lips.
It all started when my Grandpa passed away five years ago. It took a long time for my Grandmother to get over the grief of her loss; during that period she often asked family members to stay with her in the house that she and her husband had built. I was her favorite grandchild and I really enjoyed these visits; she had always been warm and affectionate towards me.
She soon recovered, not only that, she regained a new vigor for life. Grandma started traveling across the country visiting relatives and friends, signed up for an aerobics class, and began swimming laps in her backyard pool. The results were fantastic and she looked years younger. She had a toned midsection that women half her age desired. Her huge breasts and shapely ass turned heads wherever she went. At the last family reunion, the sundress that Grandma wore was skin tight; it caused murmurs from the women as their husbands and sons stared and drooled all over themselves.
I had just gotten out of college for the summer when I got a phone call from her asking if I wanted to visit for a week. I gladly accepted and within a couple days I was parking on her driveway. I rang the doorbell and thought about the relaxing week ahead. I snapped back into reality as the door opened and before me stood Grandma wearing only a tiny black bikini and a towel that was way too small. She must've just been sunbathing in the back.
"Oh honey, you're here! I've missed you so much, come give me a big hug."
She threw her arms around me and pressed her body tight against mine. I could feel her nipples poke me as I returned her affection and squeezed. I did not even realize until I poked her myself that I had a semi-erection that was pushing against her waist. Grandma glanced down, smiled, and took my hand to lead me through the entrance into the kitchen. She told me about her travels and other current affairs as she prepared some snacks. I could only nod back as my eyes roamed her body from head to toe as she strutted around the room.
Her big breasts bounced lightly as she walked around. I couldn't see any tan lines; she must've been tanning topless. Grandma bent over to get something out of the fridge and I got an eagle's eye view of her ass and pussy lips through her bikini bottom. I dick was about to bust out of my pants as I made my best effort to conceal it and went upstairs to the visitor's room.
Afterwards, as I was unpacking my suitcase, Grandma knocked on the door and asked if I wanted to join her by the pool. I accepted and dug through my clothes for my swimwear. Just as I found it, I thought about how hard it would be to conceal any erection with the thin Speedo I held in my hands. I said fuck it and thought about how much I would tease my Grandma with it.