"don t be down in the mouth" in German Don't be down in the mouth! Lass den Kopf nicht hängen! Don't be down in the mouth. Lassen Sie den Kopf nicht hängen. Detailed translations for "don t be down in the mouth" Don't be down in the mouth! Don't be down in the mouth!(also: Cheer up!) Lass den Kopf nicht hängen! Don't be down in the mouth. Don't be down in the mouth. Lassen Sie den Kopf nicht hängen.