What does 'won the casket' mean? I've googled but can't find it? Is it like winning the lottery?

…still attracted to her? She never paid any attention to her husband. Even as a kid, I noticed that. We only stayed here for a few months when Grandad won the casket and bought a house.
The Homes I’ve Lived In
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Adrienne Beaumont
Nancy Oglesby
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Mar 22, 2023
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What does 'won the casket' mean? I've googled but can't find it? Is it like winning the lottery?
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Written by Nancy Oglesby
3.6K Followers
·941 Following
I explore life and tell stories! Embracing the world of Drabbles. Publisher of Fiction Shorts, the Challenged, and Another Fucking Publication
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