The abbreviation U.N. (United Nations), when translated into Hebrew, becomes "um" (pronounced 'oom'). Among Israelis, the U.N. is derisively referred to as "um shmum." Why? Things like the following, from Ha'aretz:
Goldstone slams UN council for ignoring Hamas war crimes
South African jurist Richard Goldstone, who headed the United Nations investigation over the Gaza offensive, criticized on Friday the Human Rights Council's decision to endorse the report his commission had compiled.
Goldstone told the Swiss newspaper Le Temps before the vote that the wording of the resolution was unfortunate because it included only censure of Israel. He voiced hope that the Human Rights Council would alter the wording of the draft.