Def.1: an illness that you get from MySpace from lurking for one hour or more.
Def.2: you are addicted. get your fat ass off MySpace and do something in your life.
Michael: click on dat myspace link i sent chu. it got summ fiya azz on dere.
Sandy: yeee yeee dats right. but dude you gotz some lurkinitus going on.
Michael: bitch don't tell me what i has..i know i gotz it.
Sandy: GO GET DAT FIXED FAT ASS!