You can get away with trolling on the gaming side if you're an established personality. NintendosBooger can troll. AstroLad can troll. Some dude the mods never even heard of? Watch your back. Same goes for the OT although it is a little more lenient so much as you avoid pet issues of the mods (ie, Dragona and misogyny, duckroll and piracy, etc.)
Common sense really should guide you along. Unfortunately a lot of kids there like to test the boundaries and then get pissy when they get burned. If you've been around those forums for weeks at least, you should be aware enough to know. Whether you want to push those boundaries is always an at risk scenario. Sometimes you get away with it, others get burned.
Keep in mind I spent about 7 out of 12 months in 2008 at GAF banned. I won't pretend to be a hapless victim; I knew I was breaking the rules. Don't really break them now because it doesn't seem worth it.