Have you ever noticed the letters “WC” outside a public restroom and wondered what they mean? If so, you’re not alone. The term “WC,” short for “water closet,” sparks curiosity worldwide, describing a space containing a toilet and often a sink. While the term has historical roots, it might not make much more sense than calling it a bathroom, restroom, or loo.

In 2020, a TikTok video by Shelby and Dylan highlighted linguistic differences between Americans and Canadians. Walking past a sign labeled “washroom,” Dylan quipped, “What in the world is a washroom? What are they washing in there?” His wife humorously countered, asking, “Do you rest in a restroom?” Their playful debate resonated with viewers, who weighed in with their preferred terms.

Historically, “water closet” referred to a small room with a toilet, while “bathrooms” were for bathing and “restrooms” for freshening up. Over time, plumbing advancements combined these spaces. Globally, terminology varies: Americans say “bathroom,” Canadians prefer “washroom,” and Europeans often use “WC” or “toilet.” Whether you call it a WC or a washroom, it all serves the same essential purpose.