Why, that's the best news I heard in a dog's age.
5 seconds sound clip from the The Waterboy (1998) movie soundboard.
You can hear this line at 00:05:01 in the Blu-ray version of the movie.
Quote context
[...]
- Why you home so early, my precious angel?
- Mama, somethin' bad happened today.
- Somebody hurt you, my boy? Who hurt you? You tell Mama who hurt you.
- It's just that I lost my position as the team's water distribution engineer.
- Why, that's the best news I heard in a dog's age.
- Now you be able to spend your days at home where you belong.
- Don't raise your voice to me, Bobby Boucher.
- I wasn't raising my voice, Mama.
- I don't like confrontation 'cause I'm a Virgo.
[...]