In a recent edition of BBC’s From Our Own Correspondent:

Even in your own language, it is difficult to catch accurately the words of a song if they are not written down in front of you, and in France, which imports most of its music from the US or UK, there is even a word for the appropriation of lyrics.

It is “yaourt”, or “to yoghurt”.

You start singing confidently… and then trail off into inarticulate “yoghurting” when your lexicon runs dry.