Being a Belgian I of course drink Belgian beers. Among my favorites are Loterbol, Kwak, Gouden Carolus, LaChouffe, Chimay Blue and Tripel Karmeliet. Those are all special beers though. For a quick thirst-quencher I prefer Jupiler or Vedett.
I'm also a big fan of whiskey. No real preference for origins, so long as its tasty. Currently trying Islay whiskeys. Had me some Ardbeg Uigeadail, now on to Lagavulin 16 year old.
Other than alcoholic beverages, I drink a lot of plain water and regular Coca Cola (don't like any other kind).