emoticons styled to resemble the super-deformed expressions of characters in Japanese animation*.
*better known as Anime to their fans.
I'm so happy ^___^;
I'm so sad .___.
I'm tired as f*ck x___x
"that guy's gotta be one of those animu freaks..."
"why do you say that?"
"he uses those animoticons in chat.."
"yeah..so...?"
"well I'm a jerk and a self-loathing closet geek of different stuff so I have to point that out."
"gotcha."