Possible Clues:

• ''Gang'' or ''mob'' attachments
• Attachment to "young" or "mob"
• Suffix with road and hip
• "Gang" or "mob" attachment
• "Mob" and "gang" endings
• "Hip" or "pun" attachment
• Dump and road endings
• Suffix with road and speed
• Attachment to young and old?
• Hip attachments?