In today’s world, we can’t find out who is a boy and who is a girl

Two persons were travelling on a bus

First person: In today’s world, we can’t find out who is a boy and who is a girl. Look at that boy in red there!

Second person: That’s a girl and she is my daughter.

First person: Oh, sorry! I didn’t know that you are the father.

Second person: I am not her father. I am her mother!