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.