Previously I recounted the story of when me and my gf stayed at her grandmother's house and how Margaret (the grandmother) took advantage to masturbate me while my gf Emma was in the shower. Fast forward a couple of years and Emma told me we'd been invited to her cousin's wedding in London. I was 24 and Emma was 21 at the time. We'd be staying in a hotel on the Saturday where the reception was due to be held. Emma told me that all of her family would be there and staying at the hotel so I needed to make a good impression. She told me to go and buy a new suit for the occasion saying nothing I currently owned was up to the job. I was tasked with driving Emma and her mother and her father down to London. Anyway, the wedding passed off without incident and after the umpteenth photo it was time to head to the hotel for the reception. When we got to the hotel we checked into our rooms and I found we'd been allocated a lovely large room with a nice double bed. We were in the room next to Emma's parents, her sister and her husband were in the next room along and her widowed grandmother in the room next to them. We went down to the reception for the arrival of the bride and groom, then enjoyed a lovely 5 course meal with much wine and champagne flowing and toasting and cutting of cake. Everyone in fine spirits and most of the guests getting inebriated - as were me and Emma. A couple of hours later we retired to our separate rooms. Emma and I getting it on as soon as we got inside our room before she cooled my ardour by reminding me that her mum and dad were next door and would no doubt hear everything we were up to. Cursing under my breath, I told her I was off for a shower. After we'd both freshened up and changed into clean clothes we headed back down to join in for the evening celebrations. I'd ordered us drinks from the free bar and then realised I'd left my phone in our room. I told Emma I needed to go and get it and wouldn't be long and for her to go and chat to her family sat at a nearby table. She went over and I watched her eagerly embracing a couple of relatives and realised she had a lot of catching up to do so there was no rush for me. As I exited the lift I was just about to enter our room when I heard a familiar voice from down the corridor. It was Emma's grandmother, Margaret. "Hello Paul. Enjoying the reception?" she asked. "Yes. It's been a good day so far. How about you ?" "Me too but I can't get the hang of these door cards" she laughed. "Takes me ages to get into my room". I offered to show her how to do it and which side to put the card into the slot. The door to her room was open and she said "Is your room as nice as mine?" "Don't know. Let me have a look inside". "We went inside and she pushed door shut behind us. "Ours is bigger but yours has a nicer view over the lake" I said. She sat on the bed and patting the duvet said suggestively "Hope this bed is as nice as it feels. What do you think?" I smiled at her and wondered if she was flirting with me and if I should make my excuses and leave. "Well?" she asked. I sat next to her on the bed and bounced gently on it a couple of times. "I'm sure it's very comfy and you'll sleep well on it tonight". "All that champagne has gone to my head so I know I'll sleep like a baby. Is Emma down at the reception?" "Yes...she's had a fair amount to drink too". Margaret then slipped off her jacket and placed it on the bed. She was wearing a peach dress with a nice view of cleavage on display. I found myself staring at her boobs which I remembered she told me when we'd stayed with her were 38F. Emma's was only a 34C but nice all the same. "That's better. It's warm in here..."she said (it didn't feel particularly warm to me so maybe it was just her excuse to remove her jacket...."do you remember when you and Emma came to stay at my cottage ? I hope you remember it with fondness". "Yes it was...memorable for lots of reasons." She stood up and told me to do the same. Wondering where on earth this was going, Margaret then said to me. "Do you like my dress, Paul ?" "Yes it really suits you," I complimented her. She turned so her back was to me and then said to me, "You can unzip it if you like?" My heart was beating fast and I had the dryness in my mouth - nervous anticipation you might call it. Emma a million miles from my thoughts. I lowered the zip...revealing a white bra and then a second later white French knickers. She eased the sleeves of the dress off her shoulders and then the dress fell to the floor. Margaret turning to face me with a naughty smile on her face. "Good boy," she said smiling. She began to unbutton my shirt saying "I know we haven't got long so let's make the most of this moment." Removing my shirt she unfastened the belt on my trousers and and unzipped them letting them fall to my ankles. "Shoes off" she instructed me and I kicked them off in an instant and then moments later she'd fully removed my trousers and socks. With me in just a pair of Calvin Klein boxers , Margaret said, "Look at that bulge" she said. "Just as big as I remember". I took her hand and placed on my bulge. She needed no encouragement and she began to massage and stroke it and within seconds I had a full erection. Easing my boxers down, my erect cock sprang free from its confinement and as she sat on the bed she wanked me for a few seconds before taking me in her mouth. She eased my foresking back and teased my helmet with her tongue tip licking all around my bell end. I groaned loud and moaned at her not to stop. Not that she was likely to. She licked all along my shaft and cupping my balls began to play with them and she performed her oral delight on my cock. She must have remembered I told her I loved my balls being played with as she fondled and tickled my balls. I could have cum there and then but wanted to fuck this lovely mature lady. I pulled her onto the bed and unclipped her bra at last getting my hands on her lovely big tits. Sucking and licking her big nipples was something I had thought about for ages and when I went down on her and spread her legs wide she was already soaking wet. My tongue and fingers had her moaning like crazy (despite me reminding her not to make too much noise) and working on her clit I made her cum twice in a few minutes as she grabbed my head forcing my tongue to lick out all her pussy juices. She gave herself a minute or so to recover and then resumed her sucking of my big cock. She made me tell her how big my cock was (8.5 inches) and even dirtier she asked me if I ever thought about fucking her ? Yes I admitted. Sucking on me faster and then wanking me in between the sucking she even then asked me if I thought about fucking her when I was fucking Emma. All this dirty talking from a respectable lady in her 60s sent me over the edge and I exploded all over her face and tits as she milked me till my balls were dry. "Looks like I'll need another shower now" she laughed. "You do cum a lot, don't you, Paul. More than I've seen for a long time". Wondering how I'd got into all this, I left Margaret who was heading for the bathroom to get my clothes and head back to my room. Managing to clean myself up, I headed back to the reception to find Emma on the dancefloor with all her relatives. She saw me and came over and sitting down said, "Have you seen Gran? (meaning Margaret). Mum said she should be down by now." "No I haven't (;). Want me to go and check on her room?" "Yes please. I don't want her to miss out on all the fun." Thinking to myself..."She's not likely to feel she's missed out in any way" I went to check on Emma's horny grandmother and she if she needed another mouthful of my cock.