Yeah, it’s because the picture is on imgur, and you’re in the UK.
Here is the imgur page about that, which you also might not be able to read, so here is our very own SD thread about it.
The picture is a black & white bathroom type sign, with the common person in a wheel chair symbol. Behind the wheel chair, and about twice as tall and twice as wide, is a giant black toilet with a handle that looks like a squinty eye.