Boomerang factory Simon Harvey 6 years ago I used to work in a boomerang factory. In the Returns Department. When does a joke become a Dad Joke?Date26 April 2018In relation toDad JokesWhat’s the difference between a pun and a Dad joke?Date28 August 2017In relation toDad JokesDentist JokeDate26 July 2018In relation toDad Jokes