Dad jokes are a type of joke that typically involve puns or wordplay and are often seen as corny or cheesy. The term 'dad jokes' is thought to have originated in the early 2000s, and they are usually told by fathers to their children. The crossword solution for the term 'dad jokes' is 'popcorn, ' which is a reference to the fact that dad jokes are often so corny that they make people groan, just like eating popcorn.