Peter McIntosh was a ventriloquist from Season 3 of America's Got Talent. He was eliminated in the audition round.
Audition
Peter McIntosh's audition in Episode 304 consisted of a ventriloquist routine involving his puppet Fiona recognizing David Hasselhoff from Knight Rider. Unfortunately, Peter never closed his mouth during his act. Piers Morgan, Sharon Osbourne, and David all buzzed the act. At least two judges voted "No", eliminating Peter from the competition. Peter was angry and swore at Piers after his audition.
Health teaching
After 11 dormant years from his audition, Peter McIntosh applied first as a substitute teacher at UNIS. He later became a health teacher to replace another health teacher who left. Peter's students managed to get a link to the AGT video and this wiki page link too and it became a school wide meme. Peter has testified to students that the act was staged as AGT needed a ventriloquist for a staged performance, thus choosing him even though he is not a qualified ventriloquist.