Years ago I used the word "twat" around my girlfriend and she said "you're pronouncing that wrong". WTF? I thought she was going to tell me to pronounce it like the English do ("twatt" instead of "twott") but she said it was actually pronounced "twah" - without the t on the end. Turns out she thought people were trying to use the French word toit. No idea why she thought people were going around calling each other roofs.