Naked with Gran

Read some other experiences and never told anyone this. Stayed at my grans when I was 22. I was in the bath and she just walked in and started to get things from the cupboard. I was so shocked I didn't say anything. When I got out a few minutes later she offered to dry my back. I suddenly felt really freaked out but really horny too. I mean extreme horniness. I was hard so fast. And I just said yes. She dried my back and I was stood there hard as anything. She kept accidentally touching my cock. When I was dry I went I to my bedroom and was going to get dressed but I was so worked up and scared and freaked out I wanted to keep the feelings going so I pulled on my briefs and went into the lounge. She was so casual about it all. Looking at my bulge and just making conversation. I was sat on the couch and she casually said you didn't need to put anything on. For a few seconds I didn't have the courage to do anything, then I just pulled my undies off and sat on the couch naked and solid. She kept looking at my cock and it made it harder and harder. I'd never felt so intense. She stroked my leg and my balls. I opened my legs up wide. She was stroking my cock and squeezing it a bit. I ended up cumming so fast it was a bit embarrassing but she just moaned. I stayed naked all night. She was naked later on. I remember her stroking my ass crack gently tickling the hair and making me groan. She talked about all the sex she'd had and how much she liked cock. It was so so shocking and erotic. She stroked me about five times that night. It only happened once and nothing was ever said about it, but my cock has never been as hard as that night.