Short for a Honda/Acura Integra. Slang term derived from saying 'integra' constantly. Also related to teg-lovers and my own definition "teggy" who is a Honda fanatic specifically devoted to the Integra model.
T.E.G is in fact the definition of Gorgeous, and relates to being Gorgeous both inside and out.
Originating from the Northern Beaches of Sydney, Australia - becoming used quite often. No one knows who it originated from or how it was created.