Casual sex is all about unapologetically sleeping with whoever you choose simply because you want to, but what about casual sex is so casual? Semi-Formal Sex, a play on words for the generic term of f*****g random people, embraces the positivity behind casual sex, and attempts to evoke the classy side of sexual liberation. Semi-Formal Sex displays a wide array of essays that address the good, bad, and the ugly of casual sex.