Measuring 1.25" across in diameter, this purple button features the Joker wearing his patented and extensively licensed laughy-face, along with denoted commentary revealing his emotional state.  Yeah, big leap in logic to come up with that conclusion!  Yes, the Joker's sanity is mostly nonexistent.  Yes, he'll swear up and down that fish are telling him to kill brunettes, but he's not all bad.  I mean, he's laughing, so....it's fun, right?