Son and dad take turns fucking mom

«i saw my dad and step mom having sex one day and she says to dad your son is watching us. he turned to me and said come in an have aa go at her she is a good fuck, step mom says no way is he going to fuck me too. dad says why not its all family. she says you cant be serious are you dad says yes. i see harm so i got to fuck her that day and it was so good. i asked dad on the qt if i could have her some more and he says if she says yes go ahead. i asked her and she said i knew if you fucked me that day you would want more of my pussy at some time. she said ask your dad i said he told me if you said yes i could, she says really well i guess we can once in a while.»