In the UK, we use various terms for public restrooms. Some call it a restroom, others say the loo.

But when it comes to public toilet signs, they often feature 'WC,' and many folks don't know what it stands for.

Well, the mystery has been unveiled.

A TikTok user, who goes by @Itsnathannyc, recently answered a follower's question about the meaning of 'WC.'

In his video, which has been viewed over 3,500 times, he not only revealed the meaning but also shared some interesting toilet history.

Once you break it down, the true significance of 'WC' makes perfect sense.

He elaborates: "Before indoor plumbing, we actually had a room for the bathtub, a bathroom."

"But the spout was outside. You had to carry water in with a bucket, heat it up, pour it in the tub."

"Indoor plumbing comes along and there is already a room with a bath, the bathroom, so where do you put the toilet?"

"Just put it in a closet, it's the easiest place to put a toilet."

And there you have it, the TikToker unveils that 'WC' stands for 'water closet.'

People swiftly jumped into the comments to chat about this apparent discovery, even though it's been known since the 1870s in England.

Someone wrote: "I'm glad someone asked because I've been wondering this for years but never googled it."

Another shared: "Can't believe I've been living with a WC sign and had no idea why it was called WC."

A third commented: "I was 23 y/o when I learned that WC is called water closet."

"I know what a water closet is, but don't use it (don't use the word – do use the WC)," a user confessed.

Another person wondered: "What do you mean WC stands for water closet…"

Others, however, were amazed that some people had gone through life without knowing what 'WC' stands for.

One person commented: "I've known this since I was 13?"

"Convinced I live in LA because of the common sense levels in the UK, or lack thereof."

Another expressed: "What?! Who doesn't know this?"

A third thought: "Surely everyone knows what 'WC' stands for?"