Welsh language

Welsh was a language originating in Wales. Blon Fel-Fotch Passameer-Day Slitheen, posing as the Lord Mayor of Cardiff, Margaret Blaine, chose the name Blaidd Drwg for a nuclear power plant planned for construction in central Cardiff. According to Blon, she chose the name at random, thinking it sounded good. The Doctor noticed that Blaidd Drwg was Welsh for Bad Wolf, it was an occurance of the Bad Wolf meme. (DW: Boom Town)