Top definition
1. The first meal of the day, replaced with a certain fermented alcoholic beverage.
2. The first beer of the day.
Pass me a bud, it's past 11 and we've not had beerfast!
by Flamingo Odwin December 23, 2007
Happy St. Patties Day!
The act of skipping a meal because you drank too much beer and you are no longer hungry.
Guy 1: "Hey man, you want to split a pizza?"

Guy 2: "No way! I just finished my beerfast and I can't even think about eating right now."
by moviegirl47 March 23, 2009
Happy St. Patties Day!
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