Just a few minutes ago, The Little Lady (L) apparently threw a cheerio at The Little Man (O), and I didn't see it. And this exchange took place. Notice the struggle for her to 'fess up. Notice the skilled technique. L is 3, O is 4.
O: Daddy, L threw a Cheerio at me.
L: No I didn't.
O: You're lying. You did throw a Cheerio at me.
L: I'm not lying.
O: Yes you are.
L: What's lying?
O: Lying is when you did something and then say you didn't.
They both appeal to Dad, and I am in the kitchen.
O: Dad, L is lying.
L: But I don't suppose I am lying.
Moment passes. Dad now at breakfast table.
L: (In voice of consternation): O said a rude word. He said 'lying'.
Dad mentally processing this remark.
L: O was just playing a joke about that.
Dad now staring at daughter.
L: I think that cheerio spilled off my bowl.
Dad: It didn't work in the Garden of Delights. And it don't work at my breakfast table.
A lesson in how to use every trick in the book.
Off to work...