Related Clues:

• It's not hot for long
• It goes in one era and out the other?
• In thing, for now
• Beanie Babies, once
• Troll dolls or Silly Bandz
• Fashion that doesn't last
• Overnight sensation
• Brief rage
• “I Love the ’80s” topic
• Something lacking staying power
• Temporarily in thing
• CB radios, in the '70s
• Fleeting obsession
• Mood rings or the Macarena
• Goldfish swallowing in the 1920s, e.g.