Daddy, stepson, step mommy and her friend

So stepmom and her friend come home from the game and stepmom's friend a confession that she is attracted to stepmom and want to play around and have some fun. Stepmom agrees and they start making out, kissing nipples and licking pussy. When the daddy and stepson come in and catch them the stepson confesses he doesn't really know how to eat pussy so stepmom's friend teaches him. After is obvious he's learning, daddy decides to eat the friend's pussy and it leads to an all out swingers orgy.