Classy taken to the extreme. When someone is going above and beyond it's occasionally necessary to denote their actions with the "classie" label. Also useful for sarcastic remarks.
The tux and sunglasses combo that he was wearing could only be described as classie
He threw up after the first shot, then stripped when he actually got drunk....so classie
Combination of classroom and friend. Applies to someone who is only friends with you when you are in their class. In the halls, they don't know you.
"Why won't Catherine talk to me? I always talk to her in gym."
"Oh, her? Same thing happend to me with Matt. She's just a classie."