A term used for wanna be lolitas. Comes from the japanese term "ItaLolita" which stands for "Och Lolita". Meaning that the person looks so bad that it hurts the eyes.
Instant trouser arouser. ITA's are beautiful girls in short skirts and a low cut top (if any top at all). An Instant trouser arouser, makes you receive an immediate boner when one is seen.