Related Clues:

• Mind set?
• Think pieces
• Think tank nuggets
• Fancies
• Head sets?
• They're sometimes wild
• Head starts?
• 'Any ___?'
• ''Don't get any funny ---!''
• Think tank output
• 'Gibraltar may be strong, but ___ are impregnable': Emerson
• Brain waves
• They're sometimes funny
• Lightbulbs, in the comics
• Themes