Bei mir liegen Sie richtig
Starring Dieter Hallervorden, Rosel Zech, Ezard Haußmann, Alexander May, Dieter Pfaff, Rolf Zacher, Werner Kreindl, Klaus Mikoleit, Janette Rauch, Brigitte Grothum
It's a comedy movie, and has a rating of 5.5 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Singapore.