Hrm..., validity as in, you go somewhere the language is spoken and start being offended every time they use a word or expression which sounds similar to an offensive one in your own native tongue? Sounds like a fine strategy to look for trouble.
_________________
The red lake has been forgotten. A dust devil stuns you long enough to shroud forever those last shards of wisdom. The breeze rocking this forlorn wasteland whispers in your ears, “Não resta mais que uma sombra”.