last big thing

/L AE1 S T B IH0 G TH IH0 NG/
noun
  1. 1

    A recent fad or trend that has lost its popularity.

  2. 2

    Used other than figuratively or idiomatically: see last, big, thing.

  3. 3

    Alternative form of last big thing. [A recent fad or trend that has lost its popularity.]