flash mob

Etymology
Perhaps from, a term coined by in  (1973), a story about cheap teleportation in the future.

Noun

 * 1) A group of people who rapidly assemble, perform an unusual and seemingly pointless act, and then quickly disperse.

Translations

 * Armenian: ֆլեշմոբ, շանթամբոխ
 * Belarusian: флэшмо́б
 * Bulgarian: флашмоб
 * Chinese:
 * Mandarin: 快閃
 * Czech: flash mob
 * Dutch:
 * Finnish: flash mob, äkkiryhmä
 * French:
 * Georgian:
 * German:
 * Hebrew: פְלֶאש מוֹבּ
 * Hindi: फ़्लैश मॉब
 * Japanese: フラッシュモブ
 * Korean: 플래시 몹
 * Latvian:, flešmobs
 * Macedonian: флеш моб
 * Malay: aksi rasa kilas
 * Maori: urumaranga
 * Polish:
 * Russian: ,
 * Swedish: flash mob
 * Ukrainian: флешмо́б