A thread on a forum that has become doomed due to excessive spam, flaming, or general idiocy. Unlike spam, toast referst to an entire thread, rather than an individual post or series of posts.
Conforming to laws and/or rules. Accepted by a ruling or administrative body.
Hippy 1: Alcohol is legal, man, but pot isn't, man.
Hippy 2: I know, man, what's up with that, man? I mean, who says what's legal, man?
Police: Open up! We know what you're doing and it's not legal!