This one is mostly used in a literary sense, although that does not prohibit its use in more casual scenarios.

ab ovo (ab o·vo): / ab OH voh / (always italicized)
adverb

(1) from the beginning (literary)

[From Latin ab ovo meaning “from the egg.”]

Usage: Tell me the story ab ovo and don’t skip any details no matter how insignificant they might be.