In my Army days, a buddy of mine knocked on my barracks room door to ask if I'd double team his girlfriend with him. They had both been drinking and I believe came up with the idea on the spot. When we finally got down to business I noticed that he was small, I mean there was at least a three or four inch difference in length and about a 1 to 1 1/2" girth difference as well. Once his girl mentioned my size, he couldn't keep it up. I felt really bad for him. Knowing that I ruined the evening I made my apologies and left. He never talked about it and later said he was so drunk he couldn't remember a thing about that night, but his girlfriend was super nice to me afterward. This has kept me from entertaining the idea of doing mfm threesome again.