verb/ja.uʁ.te/
to speak or sing poorly in a foreign language, usually English, using misheard words
“Et il programmait la plage aussitôt, repartait, one, two, three, four ! en yaourtant avec son accent épouvantable.” — And he would play the track straight away and start singing again – "One, two, three, four!" – butchering the lyrics with his dreadful accent.
Synonyms: chanter en yaourt
From yaourt (“yoghurt”) + -er.