Chapter 819 My Granddaughter's Questions> 21

"Get dressed like you were the day you and grandma went to the lake," Ellie said as I got off the bed. I looked at her for a few minutes then smiled as I found a pair of shorts and a shirt like I might have worn on that day.
"I'll see you outside," I said slowly, wondering what Ellie had up her sleeve. Actually, at that point she didn't any sleeves or anything. Her nipples were hard, her pussy was drenched and her recent orgasms had given her that 'just fucked' look that would drive any man crazy. My cock stiffened all over again as I went out to get the air mattress.
It took me about fifteen minutes to fill the air mattress and find a suitable blanket to cover it with. I set it in the backyard between some hedges that gave us even more privacy than just the wooden fence and then plopped down on it to wait for Ellie. She was taking longer than I thought she would and I was just about to go find her when the back door opened and she took my breath away.