Related Clues:

• Fast-spreading concept
• Viral phenomenon
• Talk out of your head
• Speak irrationally
• Oratory with lots of arm-waving
• Blogger's indulgence
• Vent verbally
• Speak loudly
• Kid's enthusiastic "I do!"
• Vehement speech
• Angry monologue
• Repetitive cry while waving a hand
• Quickly spread cultural idea
• Verbal venting
• It may come from a loud speaker