2 definitions by Rustingway

Material used in fictional Japanese contructs such as katana, shuriken, truck-kun, or even buildings.

Objects made of japanium tend to be intensely more durable and capable than their real world counterparts.
Protaganist: It's over for you villain. This katana was forged with pure japanium folded over 1000 times!
by Rustingway February 25, 2023
Get the japanium mug.
The act of turning the hat upon one's head 180 degrees so that the bill faces backwards.
You can tell when Jimmy is being serious when he southbills.
by Rustingway May 21, 2009
Get the Southbill mug.