Br.Eng. has had plenty of experience evolving under censorship, it's where our great tradition of innuendo comes from. I'm thinking particularly of Polari (Roma-influenced gay slang), and how Kenneth Williams got an entire comedy show packed with man-on-man innuendo to be broadcast regularly on national radio in the middle of the afternoon (Round the Horne). At a time when homosexuality was illegal.

Or try explaining panto to Americans. Or even Allo Allo, a show which would .. definitely not be made nowadays.

I've seen false positives referred to as the "Scunthorpe problem". Someone on the internet has a nice map of filthy-sounding real UK place names ...