You knew it would be a bad idea to agree to your pregnant Sister moving in with you and your wife for a few weeks.. its always been a little awkward between the two of you.. the unspoken sexual tension between you thats been building up over the years.. bringing all that to your home in front of your unsuspecting wife. Your Sister is a cock tease.. doing her pregnant stretches right in front of you with those tight shorts pulled up waaay too high for it to be accidental.. her round ass right in your face. Pulling her boobs out in the garden like its nothing.. like you shouldn’t be looking.. like its YOUR fault your dick is always hard around her.. rubbing her pregnant body on the sofa next to you.. its like she KNOWS you got a thing for pregnant women.. like she KNOWS your wife is too prudish to let you creampie her and impregnate her! ..and now it may be too late to stop whatever this is.. it might be too late to stop yourself from cheating on your wife with your own biological Sister…
