A non honors or AP class in high school where few people do their homework. When no one does their homework, it means that students did not copy homework and since copying homewrok is against school rules, the class must therefore be good.
The rule that states that if your added word is not published on Urban Dictionary in 5 days after first added, then it is safe to assume that your word will not get published and you have to try to readd it.
Jay: Damn, my defenition of GTFO is not published yet... it has been 7 days since I added it!
Gary: That's because you didn't follow the 5 day rule.