Coming from a secluded tribe of warriors with a sex-positive attitude, the futa didn't know that rubbing her dick against your wife and having her eat her cum was considered rude, regardless it worked and now your wife can't get enough of her new futa
When your bullies found out you were dating the class freak, they went over to pick on her because the truth was that they secretly liked you, but no one else knew that, including your girlfriend who bent them over and fucked them senseless, planning to
When you contracted with a demon to cure your infertility, you didn't expect your children to be more like their non-human parent, succumbing to their vices and showing their twisted love by devouring you in darkness and despair, starting by fucking you
C'mon, grandpa, be a good genderbent father who lost to his futa daughter and finish all your cum, once you do, I'll take you on a walk around the town and get you pregnant, dad's so old-fashioned, talking about how futas should be fucking with love,
To escape her stone curse, Chrysalis reincarnated as Cadence's 2nd kid, getting revenge by creating a divide between the relationships of the retired key powers in MLP, turning women like Cadence and Twilight into her pregnant concubines before sucking