Related Clues:

• Tightly packed
• Not too bright
• Not too astute
• Slow on the uptake
• Not the brightest bulb on the tree
• Like jokers
• Out of control
• Hardly qualified to be a rocket scientist
• Feral
• Violent
• Doltish
• Stupid
• Ingmar Bergman's ''--- Strawberries''
• Thick as a brick
• Unintelligent