Related Clues:

• Chuckleheads
• Foolish ones
• Simple folks
• Saps
• Birdbrains
• Dunces
• Lamebrains
• Dim bulbs
• Putdown of those with whom one disagrees
• Dimwits
• No-brainers?
• Tomfools
• Imbeciles
• They're thick
• Other drivers (never you, of course)