Related Clues:

• Knucklehead, in old slang
• Fool gives information
• Fool; information
• Study training information
• Exercise, weed!
• Partake in exercise, fool!
• Party training gets information
• Drug — information
• Party training produces information
• Unit for several detectives on 'The Wire'
• Take exercise, a drug
• Low-down fool
• Use performance-enhancing drugs
• Dimwit’s stupefying drug
• ''Inside'' stuff