I awoke with a full blown hard-on and an urgent need to pee. I jumped out of bed and hurried down the hall to the bathroom I shared with my sister. I was glad I beat my sister to the john and I stepped into the bathroom, closing and locking the door behind me. I pushed the front of my boxer shorts down, freeing my erection and pointing it down at the toilet. The stream of urine hissed out of me and gurgled into the standing water inside the bowl. Once the urine stream ended, I began stroking my hard-on, happy that my sister was not yet pounding on the door.
As I rubbed my prick, the vision of my grandmother floated through my mind. It had been more than a week since we had sex for the first time and Gramma had become my favorite fantasy.
Her name was Marilyn and she was fifty-eight years old. Her face was beginning to show her age but she was still pretty. She visited the gym three times a week and it showed. Her body was firm and tight, not like a twenty year old but there was very little sag or droop anywhere on her body.
There was a knock, an almost gentle knock, on the door. I knew it wasn't my sister, because she knocked like the police serving a warrant. "I'll be right out," I called.
"Let me in," I heard my grandmother say, "I want to show you something."
I pulled my shorts up and unlocked the door. Gramma came in wearing a white, floor length dressing gown. "Do you mind?" she asked.
"No," I answered, backing up to let her in, "Not at all."
Gramma stepped into the room and locked the door behind her. As she turned to face me I noticed her eyes were drawn to my boxer shorts. "Cute shorts," she told me.
"Thanks," I said.
"I'll bet what's in them is even cuter," she said, reaching out and gripping my erection though the material of my boxers. "And its already hard." She was smiling.
BANG-BANG-BANG my sister pounded on the door. Gramma visibly jumped at the noise. "Let me in," Holly yelled.
Gramma put her finger to her lips to shush me, unlocked the door and cracked it open. "What's wrong," Gramma asked, "Is the house on fire?"
"Sorry, gramma," Holly answered, "I thought Matt was in there."
"Its just me," Gramma said, "Since I'm in your washroom, why don't you use mine? Everything you need is there."
"Alright, Grammy," Holly said happily. Gramma's shower had a seven head spray which Holly loved.
Gramma closed the door and turned back towards me. "Take those off, will you?" Gramma said.
I shoved my boxers down and as soon as my hard-on was free Gramma took it in her hand. "I've been thinking about you," Gramma said, "But it seems every time we're home together either your mother or your sister is home, too. This afternoon will be different." As she spoke, Gramma moved her free hand down to fondle my balls. "Isn't this better than doing it yourself?"
