An acronym pronounced like "honk." It refers to a "Dick," "Dumb-ass," "Douche," (or other "D" word) ON a Cell-phone. Most often applied to a person who is so busy talking on the cell phone that they drive like an idiot, eg: drive ten miles under the speed limit, don't use their mirrors, don't signal, etc. It can also be applied to a cell user in other circumstances like a movie theater, elevator, or other inappropriate/annoying places.