Measuring 1.25" across in diameter, this yellow button with a flushed, orange rim features the Joker smiling.... manically.  Why such a grand grin?  Joker just mailed out the Mayor's ear to Commissioner Gordon.  Oh, a happy, happy day!  And if the Mayor refuses to learn all the words to Debbie Gibson's, "Electric Youth," an eyelid will be the next item parceled to our fair Commissioner.  Hey, it's the Joker.  He really doesn't belong on a toothbrush.