gotcha call
n.— «Puerile, cringe-inducing, patronising and crude. These are just a few ways to describe Matt Tilley’s popular gotcha calls on Fox FM.…In the past few years, prank telephone calls to unsuspecting Melburnians have become a key element of show.» —“The good side of gotcha” by Wendy Hargreaves The Age (Melbourne, Australia) Nov. 7, 2007. (source: Double-Tongued Dictionary)