yaourt

/ja.uʁt/
1.
nounmasculine

yogurt (dairy product)

Je vais prendre un yaourt en dessert.

I'm going to have a yogurt for dessert.

2.
nounmasculine

singing in gibberish—using improvised, meaningless syllables instead of real lyrics

Il ne connaît pas les paroles, il chante en yaourt.

He doesn't know the lyrics; he's singing in gibberish.