Possible Clues:

• Reciprocal or shared, like friendship
• What the dickens is that friend of ours?
• Feeling for each towards the other
• Nearly fall over before beginning to light joint
• It's enough to turn your stomach so to get you a half-century
• Shared by two or more people
• Common substitute for umlaut
• Dickens' novel 'Our ...... Friend'.
• Who the dickens is that friend of ours?
• Dicken's novel