Remember, it was the 1960s. I don’t think this joke has aged particularly well.
From a box sold in Chicago, Illinois.
Gentleman (to a stranger beside him at the bus stop): “It’s almost a disgrace the way some girls dress now-a-days. Look at that girl over there. You can hardly tell if she’s a girl or a boy.”
Stranger (obviously offended): “I’ll have you know that is my daughter!”
Gentleman: “I’m sorry, I didn’t know you were her father.”
Stranger (indignantly): “I’m not! I’m her mother!”