The majority of public restrooms are denoted by a “WC” sign; however, nobody appears to understand what this signifies. Now that we know, though. For this kind of little-known yet strangely fascinating knowledge, the internet is a goldmine. Spending a lot of time online teaches you new things every day, whether it’s the hidden uses for the hooks on shopping carts, the meaning behind the initials of M&Ms, or the proper use of a cheesegrater’s fourth side. However, a recent discovery regarding restrooms has the internet confused.

One writes, “I’m glad someone asked because I’ve been wondering this for years but never googled it.” Another adds, “I can’t believe I’ve been living with a WC sign and had no idea why it was called WC.” “I was 23 y/o when I learned,” somebody else comments. A fourth says: “I know, but don’t use it (don’t use the word—do use the WC).” Others, however, are astounded that people have lived their entire lives without understanding what ‘WC’ actually stands for. A second person questions: “What?! Who doesn’t know this?” “Surely everyone knows what ‘WC’ stands for?” asks a third. The real meaning of “WC” actually makes perfect sense when you break it down. The history of toilets serves as the basis for the name’s derivation.