Top definition
A get together designed to build morale and courage through intake of heroic amounts of alcoholic beverages, primarily beer.

May or may not have been done in WWII by your grandpa. If he did, it was 2.5% alcohol 8oz beer cans, and he only had 2- but he felt invincible afterwards.
What time is beer muster? No, seriously- we can't figure out...
by Bj Bruce February 03, 2012
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