Similar to the ^_^
face, it can denote super happiness, pride, or just cuteness, depending on its usage.
"I aced the final exam! ^-^"
"Hey, cutie, you want to hang out tonight? ^-^"
A loquacious, ridiculously intelligent, sometimes obnoxious, egregious smartass. The most awesome individual to (dub)step on this earth and say "Sweet Jesus, what the hell is wrong with humanity?" A person who is so versatile in their personality that you will never really figure them out. A gentleman of fortune to the likes of which shall not been seen ever again.
"Who the hell is Vinnie?"
"If you have to ask who Vinnie is, GTFO