Listen to You Don't Know What Yer Doing online. You Don't Know What Yer Doing is an Unknown language song and is sung by Man City FC FanChants and MCFC Fans Songs & Manchester City Fans. You Don't Know What Yer Doing, from the album Manchester City FC Football Songs AnthologyII 2nd Edition, was released in the year 2018. The duration of the song is 0:08. Download Unknown songs online from JioSaavn.