It is the picture that has stomachs churning and people talking.

After Thanksgiving dinner a couple gave some leftover sweet potato casserole to their relatives. Four months later the casserole dish was returned - with the moldy casserole still inside.

The disgusting sight was photographed by husband and posted onto reddit under the tagline, "My deadbeat sister-in-law"

The casserole dish may have left in the back of the sister-in-laws car since November.

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