(Kilo Rad) or (cool X 1000)

Derived from Kilo (1000) * rad (see radical - meaning cool or amazing)

In keeping with computer terminology, its use was popular on dialup bulletin board systems (BBSes) in the 80s and early 90s, frequented by first and second generation hackers and computer enthusiasts.

From the skater and phreaker slang "okay rad" (rad was short form of 'radical') commonly shortened to "kay rad". Was shortened to "krad" in text communications, possibly spawned "kthx".

Agreed. (rad*1000) ... i read once that it was originally used by surfers/skaters in the early 80s.

Psychotic blonde alter-ego of Hiwatari Satoshi (of the manga D.N. Angel). He may be pure evil, but he's pretty damn hot for a psychopath.

pronounced "krod" the past tense verb form of the word "kra" which is also on urbandictionary.com

A fat little boy who loves to suck cock. He likes to ride a kid named Terence and did I mention he's gay?