Another form of the word 'Lakemba", which is a suburb in sydney near canterbury, belmore and roselands. the form LEBKEMBA comes from the fact that lakemba is infested with filthy lebs who are 'proud' of their suburb.
you might see tagged somewhere, or written on some teenage lebs school bag in marker, 'lAkEmBa 2195'.
johnny: where was the shooting on the weekend?
emily: lebkemba
johnny: oh typical ! damn lebbos!
Usually a friend or associate who acts like a dumass douche and for the most part is a failure in life like Buddy Lembeck from Charles In Charge, ergo lembeck.
No, I don't want want to go to Vegas, quit acting like a Lembeck and get back to class.