It was just going to be a night to watch the football game. We were getting together at my best friends house. My wife, Sara, and I were having BBQ and drinks and then watch the big game with Bob and his wife Amy. As the evening got going, we started to drink quite a bit. We were ready for the game to begin. Just before the coin flip, Bob said to his wife, "I'll bet you we win the coin toss." Amy replied, "Okay, loser has to kiss Sara." "Hey", Sara exclaimed, "I'm a reward for the winner, not the loser." Amy laughed and said, "Your right." Well our team won the coin toss and Bob came over and gave Amy a soft kiss. Then he grabbed her and gave her a good hard tongue kiss. "Hold on a second, the bet was one kiss", I stated with a little jealousy. "Your right, I guess you owe Amy a kiss." With that Amy came over to me and leaned in and started kissing me. Out of the corner of my eye I could see Bob still kissing Sara. Sara and I had never done anything like this before, but I can tell you I was turned on by Amy's kiss and your skinny, sexy body. As I kissed her, she started to grind her crotch into my thigh. I quickly got a hard on, which was aching to come out of my pants. As Amy and I broke our kiss I glanced over at Sara and was shocked to see that her shirt was up over her B-cup breasts and her Bob was under her bra working them over. As I was about to say something, Amy said "two can play that game." With that little statement, she started to get undressed. Her top and shorts came off within seconds and her bra and underwear followed. She pulled me on top of her and I started kissing her breasts and rubbing her crotch. I completely forgot about Sara and was amazed at the tight, fit body under me was so amazing. As my fingers worked in and out of her crotch I felt her shudder and come. I looked into her face and she pushed my head down. As I started licking her cunt I took a look at Amy and saw Bob was doing the same. Amy and I locked eyes and I could tell she was scared but excited. I decided to continue. I quickly got undressed and got on top of Sara. She was still soaked, but it took a while to get my penis in. As I was thrusting deep I locked lips with Amy and started a tongue battle that would have made McArthur proud. As I felt myself about to come I pulled out and quickly moved to Sara's mouth. Sara knew exactly what was happening and grabbed my cock and stuffed it all the way back to her throat. I started to ejaculate and she sucked it all up. As I lay there spent, I turned to Amy who was getting it from behind by Bob. The angle of Amy's legs let me watch another man's dick going in and out of Amy's pussy. She sure seemed to be enjoying it, so I didn't say anything. Sara quickly moved in my line of vision and I realized that she was aiming for my wife. She got her head down and started licking Bob's cock and Amy's pussy all at the same time. This made Bob thrust faster and I saw Amy orgasm. I moved up to her and started kissing her. Amy was kissing me, getting fucked by Bob, and being eaten by Sara. That was too much, she came again and I heard Bob grunt as he shot his load into my wife. We all sort of untangled and Amy and Sara went upstairs to "freshen up". Bob and I got dressed and started watching the game, but we weren't really into it. As Amy came back down stairs we thanked them and left. On the way home we talked about what happened and agreed that it was fine, but that we wouldn't do it again. At least not for a little while....