What you do if you wife puts a spell on you and turns you into a sexy blond and sends her boyfriend over to bend you over and fuck you from behind is you don't let him think for a second that he is getting to you. (OMIGOD) The spell will be broken if you appear indifferent to what he is doing (OH YES GIVE IT TO ME) and you will return in ten minutes to your previous self. But it is critical that you not wiggle your butt or push it back toward his cock (OH THAT FEELS SO GOOD I AM GOING TO PUSH BACK A LITTLE I AM SURE IT WON'T MATTER) Don't utter a sign a whimper no sign at all that you like it (OH GOD YES YES OH GOD) because even a little encouragement will make him fuck you even harder just like man and then the harder he fucks you the harder you want him to fuck you (YES OMIGOD PLEASE OH YES)
Then you will start thinking it is okay to be a woman and you will be so intent on getting yourself fucked that you will forget about breaking the spell and you will start saying out loud I'M YOUR BITCH I WANT YOU PLEASE DO ME PLEASE DO ME and that plus slapping your lovely ass will make him cum for sure and you will steel yourself for the ride of your life and from that point on you are done.
Things have now changed for good and you are his woman and every night he and his friends will come over to your place and do whatever they want to do with you and your now former wife. You will both wait around looking forward to it and some nights because they can they will now fuck the two of you side by side, your legs wrapped around their backs.