Amy Chua was in a restaurant, celebrating her birthday with her husband and daughters, Sophia, seven, and Lulu, four. "Lulu handed me her 'surprise', which turned out to be a card," writes Chua in her memoir, Battle Hymn of the Tiger Mother. "More accurately, it was a piece of paper folded crookedly in half, with a big happy face on the front. Inside, 'Happy Birthday, Mummy! Love, Lulu' was scrawled in crayon above another happy face. I gave the card back to Lulu. 'I don't want this,' I said. 'I want a better one – one that you've put some thought and effort into. I have a special box, where I keep all my cards from you and Sophia, and this one can't go in there.' I grabbed the card again and flipped it over. I pulled out a pen and scrawled 'Happy Birthday Lulu Whoopee!' I added a big sour face. … 'I reject this.'"