Beer Bosun - The messdeck rating responsible for maintaining the beer locker. Can also be used to describe someone with an excessive fondness for *CSB.
*CSB - Courage Sparkling Bitter, a high gravity and powerful keg beer especially brewed by Messrs. John Courage for Her Majesty's sea-going ships. Anyone suffering from the effects of over-indulgence of this excellent ale is said to be suffering from CSB rash.
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