Related Clues:
- Hula hoop or pet rock
- PC program, briefly
- It goes in and out quickly
- Pet Rock, e.g.
- Mood rings or the Macarena, once
- Pet rocks, e.g.
- Cabbage Patch Kids or Beanie Babies
- Hula hoop, once
- Troll dolls, once
- Tongue tattoos, e.g.
- Silicon Valley product
- Phone booth stuffing, e.g.
- Kindle download
- Something going out shortly
- Here-today-gone-tomorrow trend