Note: To be used only by a person who currantly has a coffee cake in his mouth.
Person A: "I am sick and tired of listening to people complain about being called fatties, dummies, boozers, losers, winos, tubbos, tokers, smokers and jamokers. Whatever the hell jamokers means."
Person B: "I was actually saying jokers, and I had coffee cake in my mouth."
In general, a blue-collar male of a specific physical or cultural profile, typically of an East Coast derivation, burly and boisterous. As a term of affection, similar to "big lug". As an epithet, rarely rises above the level of exasperation.