Possible Clues:

• Toilet / Toilet
• Person with high ideals?
• One living the high life?
• Joint beneficiary?
• Jack ... / Cheese ..
• Primarily pointing out Tim Henman’s earlier answer: “Djokovich is grass lover”
• Dope fiend
• Stoner
• Dope? That's endless supply needed for me
• Drug addict's articles locked away by school