Of course!

As soon as you hear the door close you were on your feet. You had to fight the urge to sprint down the hallway as fast as humanly possible, trying to keep yourself calm even as your heart was nearly exploding in your chest. You couldn't control yourself, there was no way you could resist the chance to peek in and see what was happening. In a flash you found yourself in front of the bathroom door, placing your hand as silently and gently as possible on the knob. You opened the door just a tiny bit, enough to lean in and peek through the gap and see what was happening. Luckily both of them were far more focused on their dirty fun to notice you, with your grandfather happily looking at your girlfriend's ass as she bent over in front of him to start up the water in the shower.

"You really are the best for indulging an old man," he said with his eyes locked on Carrie's rear end. As you looked at the sight you saw that Carrie had already removed her panties, showing off more for your grandfather already.

"Of course master," Carrie said as she stood and turned to face him, "it's nice to have a man so attracted to me like you are anyway."

"Oh I am DEFINITELY attracted to you hun," he said quickly. Stepping closer to her he reached his hand out and grabbed Carrie's wrist. "Feel how attracted to you I really am."

With that he pulled Carrie's hand towards his crotch, and you watched as your girlfriend rubbed your grandfather's hard cock through his pants. Your own erection throbbed as you watched her gently rub it, making no attempt to pull her hand away. You could see the bulge in his pants growing larger as her fingers slid along the fabric and teased his hard cock.

"Mmmm," she moaned, biting the corner of her bottom lip. Her hand continued to rub it even as your grandfather released her wrist. "Feels like a pretty big attraction," she said.

"Bigger than my grandson?" he asked. Carrie just gave a giggle, ignoring the question and finally moving her hand away.

"You're meant to help me take off this nasty nightie before my shower ya know," she said. It was still amazing to hear the words actually come from your girlfriend's mouth. She was inviting your own grandfather to strip her naked.

Your grandfather of course was happy to oblige, reaching out and grabbing the bottom of her nightie. His hands moved slowly, as if he was unveiling some priceless piece of art in a museum. Inch by inch more of your girlfriend's bare flesh came into view. He seemed to savor every second of it, working the beer soaked night gown up past your girlfriend's perky tits and over her head, with your grandfather tossing it in the sink as he took in the sight of your woman, naked in front of him. Time seemed to freeze with your girlfriend now officially stripped down. An almost evil grin was on your grandfather's face as he gawked at Carrie, and your girlfriend looked shockingly pleased to be on display for him like this. She had her hands behind her back, jutting her tits out slightly with hard nipples poking out and showing both you and your grandfather just how much she was enjoying things. You had no idea how far she was willing to take this, but for right now it was obvious that Carrie enjoyed teasing and showing off more than you expected.

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