Acronym for "So Not German". Used for expressing one's amazement at another person's display of a behavior decidedly different from that of a stereotypically German person. Is also more generally used for pointing out a characteristic in someone or something of German origin that does not meet the observer's expectations because it is in startling contrast to his or her perception of Germany and all things German.
That guy Dietrich gave me a hug to say sorry he was late. SNG!