Possible Clues:

• Whimsical long-drawn-out tale
• Long-haired right-winger swallowing setter's yarn
• Whimsically long-drawn-out tale
• A tall, long-haired relation?
• A funny Scooby Doo episode?
• Afghan saga?
• Woolly tail behind this woolly tale?
• Long-haired boxer's blue tale?
• Unkempt boxers, say, venture outside ring � it's a joke
• Relation going on about best friend needing a groom?