Circa: mid 1990s, circulated in proletariate regions of Belfast.
Definition: A more formal form of the word 'Back'. 'Back' is often considered slang for bek to the uninformed members of public.
Bek is often used in conjunction with equally renowned word Nek in a very sensual meaning.
Licking of any part of the lower bek, and continuing to run one's tongue to the 'nek' is considered the highest form of sexual acts by many.
Those poor-ass Uzbek immigrant workers around the wog-infested areas of the Canterbury-Bankstown area. Some are nice, but most absolutely despise everybody and are politically incorrect as hell. Once you defend Trans people, these guys will avoid you at all costs.