To elaborate a little on Quatschi's answer... Dagwood was a character in a comic strip called "Blondie". He was well known for building these huge sandwiches, so eventually these types of sandwiches became known as Dagwood's. http://en.wikipedia.org/wiki/Blondie_%28comic_strip%29#mediaviewer/File:Dagwood_Sandwich_20070417.png

It is a tall, many-layered sandwich. I don't understand how people could fit them into the mouth, but they look impressive.

thanks, Peachey

What we call "Dagwood Dogs" in Australia are "Corn Dogs" in the US. It's a frankfurter dipped in batter and fried. It's usually served with tomato sauce (US: ketchup).