Possible Clues:

• They're usually fixed
• By the look of them they're on the up and up by the sound of them
• 23 downs, perhaps, on the way up, by the sound of it
• Certain putdowns
• Bad looks
• By the look of them they'll get you up by the sound of them
• Doesn't blink
• Knockouts attract them
• Some are blank
• They may be blank or glassy