This is a mid 50's surprise. My wife has always been pretty straight about sex but when I started introducing my desire to see her fucked and her see me fucked , she changed . She said she had a colleague who was bi and she trusted and fancied a bit as well ! So a drink at a pub was arranged an to my astonishment she led the evening while my stomach did tumbles . I did fancy him too . Back to our house and more drinks and then a small game of take turns on a piece of,clothing . When it was down to his briefs she asked me to take them off and I was face to face with a pretty but average cock like mine. I nearly died but kissed it . My wife groaned and then it was her knickers . We had agreed he fucked her first , then I fucked her and then he fucked me . And that followed . God I was jealous both my wife being fucked and me waiting my turn . Erotic is sex plus jealousy plus submission and cum in all orifices . We had lots of jealousy ! After the embarrassing pause post fuck we did a lot of oral and through the next 12 hours we all were meat in the sandwich ! Cumming up the arse of a man fucking your wife is awful and brilliant at the same time.