1. Posting on pro-ana sites in places like LiveJournal about how they want to "become ana" to drop a few pounds for prom.
2. Referring to anorexia as a person or, in even more bizarre cases, a deity. The term "ana", when once a useful shortening, has been taken over by wanarexics to demonstrate their "devotion" to this "lifestyle".
3. Posting "thinspiration" pictures of skinny models and celebrities, and idolizing Mary-Kate Olsen, who reportedly suffers from anorexia.
4. The overall, unshaking belief that anorexia is a cool diet that will make you thin, popular and loved by all, and consequently a complete lack of comprehension as to the truth - that anorexia is a complex, crippling mental disease that can cause appalling long-term health complications, including brittle bones, chronic halitosis, lanugo (fur-like hair that covers the body to help keep it warm when there is not enough body fat to do the job), stomach ulcers, hair loss and loss of eyesight. And that's to say nothing of the psychological effects.
A similar term exists for people who fake bulimia: fauxlemic.
"dun call me a wanarexic or goddez aNar will zap j00 with her fat ray!"