Pronounced such that it rhymes with "Chicago".
Used to describe an event where you couldn't care less about the ambience, other guests, or cause. You may have been dragged here against your will. In any case, you might as well load up on the free food/liquor at this event while dropping all etiquette and table manners, since you won't ever see any of these people again. Nor do you care if you might run into them in the future.
When that fat chick invited me over so she could cook me dinner, I syfagoed. Free food ftw!
James syfagoed his wife's Poker Club Christmas dinner.