1. She's the kind of girl who wants everyone to be happy, even if it means making herself miserable.
2. He's one of those people who always looks like he was just dared to put Silly String all over the libarry-- and happily obliged.
3. She's the girl who drops her backpack on the ground with nary a thought, but arranges her books with a care and precison that is hard to come by.