There are plenty of synonyms for the phrase "beer buy" which is the act of purchasing beer. Some possible phrases include "buying beer", "getting beer", "grabbing a brew", or "picking up a six-pack". Other expressions that one could use to describe buying beer include "procuring a cold one", "picking up some suds", or "stocking up on brewskis". Regardless of the phrase used, the activity of buying beer is a common occurrence in many social settings, and having a good variety of synonyms can help to keep things interesting. So go ahead and use these phrases to describe your next beer run!