Single mother jokes
You want to get her pregnant before marriage to know if she's fertile, so why not marry a single mother that already has proof?
You marry a single mother with an adult daughter. Now, your father marries the daughter. So, your father is your son now, because he is married to your daughter-in-law. But as your father's son and your father's father, you're your own grandpa!
Everyone: So, wait, let me get this straight. Feminists want to cancel Father's Day because it is offensive to single mothers.
Feminists: Correct.
Everyone: Then what the f*** is the point of Mother's Day?