I've been best mates with big Tony since we were kids and so you can imagine how shocked I was when I caught him with his fat cock stuffed deep inside my wife's pussy! And so there I was standing watching from just outside the conservatory. I'd just got back from work early and noticed Tony's plumbers van on the drive. I thought that it was funny, Sharon hadn't told me we had any plumbing problems, perhaps he'd just popped around to see me? I parked up and went in the back way and as I stood there, mouth open wide as my wife of 15 years was laying on the dining table, propped up on her arms as Tony's big hairy arse pounded away, his jeans and trainers at his ankles. Sharon's head thrown back and eyes rolling as he pleasured her lovely pussy that's very familiar to me. Her bra was pulled down and she had stockings on, I couldn't remember the last time I'd seen her in black fucking stockings. I didn't know what to do! I could just about make out her moans. Then suddenly Tony pulled out and stepped back. Sharon wiped her wet cunt with her hand and licked her fingers. Dirty bitch I thought. She sat up and kissed Tony deeply and smiled. She got off the table and took his hand. Leaving a wet patch just where I have my dinner - dirty, dirty bitch. Tony turned around towards me as Sharon let them out of the dining room. There standing hard out from his groin was a good sized dick. About 7" inches but very thick and very veiny with a massive bulbous purple bell end jolting out from a thick bush of dark slightly greying pubes - Tony was 46 after all, but still could clearly fuck! I watched as his hairy arse strode confidently out the room. I entered the house and snuck around, following the voices and kissing sounds to our bedroom. The door was a-jar, luckily wide enough for me to get a good view in. Sharon had taken her bra off and Tony was taking off his trainers and jeans. He'd taken his t-shirt off. He stood over Sharon now sitting on the edge of the bed. This is why he had the nickname big Tony, (or so I thought). He was a mass of pure man! Shaven headed and now topless I could see his big arms covered in tattoos. His kids names tattooed on the side of his chest. He had a huge barrel of a belly and big chest, all covered in thick greying hair. Both nipples were pieced too and hung there were two large gold hoops, paired with the gold hoops in each of his ears, his expensive gold watch, thick necklace chain bracelet, he's always been a flash dick to be honest. My wife was now licking and sucking on his fat willy. Enjoying playing with his thick foreskin. Pulling it backwards and forwards on her filthy tongue. Tony got on the bed and sat on my pillow at the head of the bed. His sweaty hairy arse, now where my face lays at night. Why was I enjoying watching this? My cock was fit to burst and it was soon in my hand and I was slowly jerking it. My pre-cum was actually now dribbling onto the carpet below. As Tony sat there on the bed, his huge hairy thighs wide open and my wife crawling towards him. It was then I noticed as my wife squatted over his fat willy, his balls were bloody huge - was this why, and not his big frame why he is called big Tony? Sharon squeezed his big sweaty hairy ball bag, holding this firm orbs as a stabiliser as she slid down his cock. Her hand could barely grasp it, the sex eggs spilling out. Sharon rode Tony and then they slid down the bed and he pounded her from underneath, those big old nuts flying around all over the place, slapping her bum with every thrust! The pair rolled over. I couldn't but know I should stop watching. Sharon had her legs wide and Tony thrust energetically into her. His back glistening with sweat as Sharon's arms wrapped around him. I got a good view of his cock occasionally when the angle was right. Thrusting in deep and reemerging shining wet with Sharon's love juices. Tony's thrusts became quicker and then I realised I was about to witness my best mate not only shag mg Mrs but cum in her, and cum in her he did, and some more some! His arse clenched tight and I could actually see his two big balls tighten, separate and pulsate as his cock drew the surge of man cream from deep inside his balls into my wife. My wife had clearly cum too. Moaning, thrashing around the bed and squeezing his arse. The sheets were wet with sweat as Tony unceremoniously pulled out and rolled off my Mrs. Covered in sweat they kissed each other as Sharon wanked his softening cock. He jumped off the bed and started to get dressed. My wife still laying there with a glazed look in her eyes. He kissed her and thanked her. Patting her wet pussy with his hand. He kept his tshirt in his hands and he headed towards to the door. I slid next door to our sons room. And watched from the window as he climbed into his van and drive off topless. I waited until Sharon was still in the shower and crept downstairs. Then my phone pinged - it was Tony?! He text me inviting me for a beer. My head was spinning! What should I do. I had to leave the house so I didn't get caught here and so I agreed and met him in our local down the road. As I pulled into the car park I saw Tony standing there smoking a cigarette. He'd put on an old tight work vest. He thrust his hand out and shook mine and threw his arms around me. He stank of sweat and sex, he joked that he'd been working all afternoon on some hot water thing and that's why he was so sweaty. We sat in the sun in the beer garden and it emerged that Tony wanted to tell me the good news...his wife is pregnant, again! He was thrilled but he complained because she was now off sex and had been for about three weeks. He said he had only cum once since their last fuck all those weeks ago, and that was today.... I was sitting there my head in turmoil. What a cocky cunt! He was unknowingly tormenting me...three weeks of cum no wonder his balls were so big, and all of their creamy, fertile contents was now deep in my Mrs' cunt. I've had the snip and so is she gonna be pregnant now too?!