Learning Heterosexuality at breakfast

The woman asks the boy, 

“who do you like at school?”

The boy gives the names of several girls. She asks if he’s talked to them, he says the play together. The woman then asks her son who he likes. He gives the names of several boys. The mom says,

“tell me which girls you like.”

The son says,“

"I don’t like girls”

and goes on to repeat the names of the boys. She responds,

“when someone asks who you like at school, you are supposed to tell them which girls you like. Your friend here like girls, so do you.”

I overheard this while eating breakfast in Wuhan, China