Means cube in the Hungarian langauge, and it's also used in Huangarian langauge to people, who spending a lot of time with playing PC games.
He is a big kocka. Yesterday he played on the computer over 8 hours!
Kocka does NOT have ANY connection with kock
it is a CUBE in Slovenian language.
(slovenian language)-kocka = cube-(english language)
it is also a nickname for some people who imitate "The Cube" or just a nickname that comes out of their Family name
example: Primož Kocuvan = kocka
in this case the nickname arrives from his family name.