dad joke noun 1verb 1forms 3 noun1 •(informal) A (usually deliberate) unfunny or corny joke, typically containing a pun and often in question/answer format.Here is an oldie but a goodie: When does a joke become a dad joke? When it becomes apparent. Wocka wocka. — 2021 verb1 •(informal) To tell (someone) a dad joke.to get dad-joked formsdad joked · dad joking · dad jokes