1. The character Marquis Halim Ondore IV in the video game Final Fantasy XII. He spread several falsehoods in the game, prompting a party member to exclaim, "Don't believe Ondore's lies!" Soon4chan's /v/ discovered that Ondore in fact tells nothing BUT lies.
2. Has come to mean any liar in general.
Whether encountering "the" Ondore or any random ondore: DO NOT BELIEVE HIS LIES.
I think I'm going to buy that Phoenix Wright game. Ondore said it was terrible, so it must be great.
My girlfriend says she's not cheating on me, but she's something of an ondore, so I don't believe her.
The traditional floor heating system in Korea. Gravel or water-pipiping beneath the stone board floor. The fire in the kitchen can be used for both cooking and heating up the floor. Heat energy gets trapped under the floor that it can warm up the room with very little amount of fuel.
Ondol is an ancient technology, yet it still remains as the mostenergy-effective heating system in the winter time.