2 centiliters is the liquid equivalent of 2/3 of an ounce.
In beer/liquor terms, it means not really contributing anything to the drinking conversation.
We were bantering about our favorite breweries & distilleries to visit, and Chuckleheadnewbie jumped in offering his 2 centiliters praising the shittiest of places.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".