Related Clues:

• Good April fool target
• Unsophisticated person
• Object of an April Fools joke
• Syrup-to-be
• Not the brainiest sort
• One easily pushed over
• One wet behind the ears
• Drain of energy
• Tree product
• Tree's blood
• Drain of strength
• It's appetizing to aphids
• Ingenuous sort
• Con game victim
• Deplete, as energy