Style of joke often limited to the dads of the world because anyone else would be able to see how embarrassing the punch-line and response will be.
>You know what a wok is don't you?
>(flatly) What dad?
>It's what you throw at a wabbit when you don't have a wifle. Hur hur hur.
>Ugh. Dad joke.
An embarassingly bad joke. Often demonstrated during wedding or 18th/21st Birthday Speeches.
Situation: You've just had a hair cut.
Dad Joke: What happened to you son? Had a run-in with a lawn mower?!