My habits: emotes
My favorite in-game emote is /lick. I use it all the time. But just to be clear, it's not supposed to be sexual AT ALL (I'm looking at you, creepy ex-guildie). I envision /licking not as some seductive errogenous-zone tonguing, but rather walking up to someone and giving them a big sloppy lick right across their face. Maybe they get some spit in their nose or eyes or something.
Aside from that, I'm a huge fan of custom emotes. My current favorites are:
/e is turning into Akahulko...!!! (This is to get pumped for boss fights or to menace a guildie)
/e tips you over. (even cows go cow-tipping)
My habits: gameplay
Perhaps you've raided with a resto druid who couldn't sit still. That resto druid is me. If space permits, I run in circles or orbit other players (I like to tell them I am their electron). If I can't move around, I spin in place. And through all this I also jump. If possible, I like to jump in a zig zag pattern. All of this movement is occasionally hampered by the need to stop and cast, but I never let it get me down! My favorite fight is
I also follow people around. Not people I don't know, because either they think I'm creeper or they themselves turn out to be a creeper. But in guild raids, I usually pick one person and I stack on them during idle times. If they move or jump around, I dutifully follow after them and stack on them again. Strangely enough, I don't get many responses to this. I'm not sure if it's because they don't notice, attribute the behavior to something related to the strat, or simply shake their heads in confusion.
My habits: idling
I compose screenshots. I don't always take them, but I can't stop spinning and angling the camera, zooming in and out, and nudging myself this way and that to find interesting framing. It can be anything from idling in the Org inn to autorunning across a zone to a digsite. I love screenshots!