I forgot to refrigerate my key lime pie last night after i baked it. it sat out for 8 hours before refrig. ok serve?

No, it is not safe to serve a key lime pie that has been left unrefrigerated for 8 hours. Key lime pie contains dairy products, such as milk, cream, and eggs, which are perishable and can spoil quickly at room temperature. Additionally, the filling of a key lime pie is typically made with fresh lime juice, which can also spoil quickly.

Consuming spoiled food can lead to food poisoning, which can cause symptoms such as nausea, vomiting, diarrhea, abdominal pain, and fever. Therefore, it is important to refrigerate perishable foods promptly to prevent spoilage and potential foodborne illness.

If you are unsure whether a food is still safe to eat, it is best to err on the side of caution and discard it.