Individuals who are of great arrogance, or who are wholly belonging to the mainstream society and laws of social conformity and use that to their advantage. Cacks are also identified as assholes or similar offensive names. Example: Due to the thirty gallons of coffee you drink every day, and the minimum wage you pay, that automatically makes you, sir, a cack.
CACK
Meaning of CACK in English
Slang English vocab. Английский сленговый словарь. 2012