Einem geschenkten Gaul schaut man nicht ins MaulTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoStephan Kaiser09/03/2015September 3, 2015Inspecting a gift of any kind, even a gift horse, is impolite to the giver, hence the German proverb. It's part of DW's special collection of illustrated German sayings. Listen to hear how the expression is pronounced.https://p.dw.com/p/1GQfVAdvertisement