Son: dad, I wanna marry that girl in the apartment below us.
Dad: don’t, I had a relationship with her mom. I’m afraid she turns out to be your sister.
Son: thenlet me marry the one in thr apartment above us.
Dad: forget that one too, I had it with her mom. I’m afraid she turns out to be your sister.
Son: how about the one across from us? Dad: same thing.
Son gets mad, goes to his mom and tells her the story.
His mom says, “fuck him”. Go marry whoever you want. He’s not even your father.