A mythical creature in Japan. Any citizen who weighs at least 230 pounds and is at least six feet tall attains this rare status.
Japa-nauts may seem aggressive, but they are actually very passive creatures.
by Store Clerk February 25, 2011
Top Definition
a japanese astronaut
Idiot 1 : "If american's are astronauts, and the russians are cosmonauts, then what are the japanese? "

Idiot 2 : "Japanauts, Idiot #1."
by Del & JJ May 07, 2005
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