52

52 is a sexual number, much like 69, 89, and 818. 52 refers to sexual intercourse in which both parties are facing one-and-other; think of it as if the 5 and the 2 are humping each-other. There are also other numbers like 52, such as 22 (Anal sex), 62 (One-way oral sex), and 818 (Double titty fucking).