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Frithjof is a norwegian word for someone with an abnormaly large head. It can also be used of a person whose bodily functions mimic that of a machine.
"Hey, Frithjof, your head won't fit in there."

-"Dude, look at that guy dancing, he's a dancing machine."
-"Total Frithjof!"
by David F. Attenborough January 11, 2011