SOURCE: Bernstein, Jüdische Sprichwörter und Redensarten. A "long tongue" in Yiddish, like a "big mouth" in English, indicates that a person talks a lot. A shofar is a horn, usually a ram's horn, which is blown like a trumpet at Rosh Hashanah (Jewish New Year) and Yom Kippur (Day of Atonement).
