I was playing with a 7-yr old neighbour on my front lawn one summery day, making origami animals, when he noticed my bare ankle.
"You have to shave your legs," he said.
"No, I don't. I only ever wear trousers."
"Yes, you do."
I said, "God gave women hairy legs but man gave women shavers."
"No he didn't!"
"Look, women are born with hairy legs. Why do they have to shave them and men don't?"
"Because men have hairy legs because they're men!"
"But all women have hairy legs."
"No they don't!", he's getting annoyed with me now.
"If women don't have hairy legs, why do they have to shave them?"
He frowns, looking a bit confused.
"Well, if women's legs aren't hairy why do they need to shave them?"
"Women don't have hairy legs!" shouting, to make the point.
As I open my mouth he puts his hands on his ears and starts shouting, annoyed "la la la la! - I can't hear you! - la la la!"
Ah, such an effective way to end a conversation.
I think adults should start using it again.