It is a boring song but it works every time.

“In my own case, I had to train myself out of that phony smile, which is like a nervous tic on teenage girls. And this meant that I smiled rarely, for in truth, when it came down to real smiling, I had less to smile about. My “dream” action for the women’s liberation movement: a smile boycott, at which declaration all women would instantly abandon their pleasing smiles, henceforth smiling only when something pleased them.”

—shulamith firestone, dialectic of sex, “down with childhood”