Ghostbusters began as the 1984 comedy film about a team of New York parapsychologists who start a ghost removal business, and it grew into a long running franchise of sequels, animated shows and reboots. Short dialogue clips from the films have circulated on soundboards for years because the performances mix sincere reactions with absurd supernatural stakes. This okay clip fits that tradition, which is why creators reuse it online as a shorthand for reluctantly accepting something strange, spooky or clearly out of control.