When does a joke become a dad joke? When it's fully groan. When a man becomes a dad, he takes on certain responsibilities: providing for his family, raising up his children to be good citizens--and telling the absolute worst jokes he can come up with. But dad jokes don't always come naturally, which is why Sandy Silverthorne created The Best Worst Dad Jokes . Filled with more than 500 groan-worthy jokes to torment your kids, this collection makes it possible for you to fill any moment of dead air with a joke that will have everyone within hearing distance rolling their eyes and edging away to avoid association with you. Jokes like . I don't have a dad bod; I have a father figure. I saw a sign that said "Watch for Children," and I thought that sounded like a fair trade. and What does a baby computer call its father? Data! And, hey, it's only downhill from there.