This scenario has happened to me many times but my wife insisted that I mix my semen with her lover’s in her pussy so she wouldn’t be sure who fertilized her if she turned up pregnant. It was all fun and games to her but bearing a love chi*ld was not my idea of a good thing if she did get knocked up. She claimed that the mystique of “not knowing” the truth until it was too late was what made a sperm cocktail being mixed in her pussy so exciting.
This is a regular Saturday night Sunday morning thing with me and my slut wife, she has come home full of another man or men who have fucked her, she knows i love sloppy seconds, so if they ask her where she wants their cum she always tells them to shoot it up her cunt.