Jancok, dancok, or abbreviated to cok (also written jancuk or cuk, ancok or ancuk, and coeg) is a word that characterizes the community in East Java, especially Surabaya and surrounding areas. In addition, this word is also used by the people of Malang and Lamongan. Although it has bad connotations, the word jancok becomes pride and becomes a symbol of identity for the community of users, even used as a greeting word to call among friends, to increase the sense of togetherness.
Normally, the word is used as a swear word when emotions explode, anger, or to hate and swear at someone. The word Jancok also became a symbol of familiarity and friendship typical among some Suroboyo arek-arek.