cup of joe

Army’s version: this comes from “a cup of (Jolt Of Energy) joe.” Or, it is a drink as common as the “GI Joe.”
Does G.I. stand for Ground Infantry? General Issue? Galvanized Iron? Government Issued!

Navy’s version: this comes from the secretary of the US Navy, Admiral Josephus ‘Joe’ Daniels who banned the serving of alcohol on ships in 1914, serving nothing stronger than coffee (although the phrase is known to predate his service.)

thanks, Joe! this’s joe’s for you