Jum-ble-mouth [juhm-buhl-mouth] noun - a person who spends his/her time researching professional and semi-professional video equipment via web sites and bulletin boards. This would generally represent equipment that he never has used nor probably never will actually use. This person believes that technical specs found in the equipments literature is the sole factor in determining the (1) quality of a piece of equipment, (2) it's performance abilities, (3) and/or it's value and/or relevance as a professional piece of equipment (stress on the last point). This person has little real-world experience with much anything he/she talks about, yet he/she will take a position and speak in an empirical manner. Spewing a mumble jumble of numbers and specs he/she compensates for his/her lack of real world experience and artistic understanding by creating a veil of "knowledge" more like how a calculator works than an artist paints.

Note: Professionals can see through this veil quite easily.