example: "yo! you're such a goodline, man. i wish is was a goodline"
example 2. "i hereby give you the rank of goodline since the actions you have done in the past has made you worthy enough to be called goodline."
See Goodwin. Commonly used on internetdiscussion threads to refer to a debate that has devolved into a flamewar or a pointless and chaotic argument with no redeeming intellectual qualities.