Jim Gaffigan never imagined he would have kids. Though he grew up in a large Irish-Catholic family, Jim was satisfied with the nomadic, nocturnal life of a standup comedian, and was content to be “that weird uncle who lives in an apartment by himself in New York that everyone in the family speculates about.”

But all that changed when he found out his wife, Jeannie, “is someone who gets pregnant looking at babies.”

Five kids later, the comedian offers hilarious observations on family life and the mistakes and victories of his life as a dad in Dad Is Fat. The book is full of funny takes on everything from cousins (“celebrities for little kids”) to changing diapers in the middle of the night (“like The Hurt Locker but much more dangerous”) to bedtime (aka “Negotiating with Terrorists”).

Gaffigan will be in conversation with Scott Simon, host of NPR’s Weekend Edition Saturday. Book signing to follow.