OAO
OAO definition by Slang.net - The Slang Dictionary
This page explains what the acronym "OAO" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.
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OAO stands for "over and out," which is used to end a conversation. It comes from CB radio communication where users, often truckers, military personnel, and police officers, would say "Over and out" to conclude the communication.
The acronym is primarily used online and in text messages by slang-savvy nerds that want to sound cool. They may also use the "O&O" variation or other acronyms, such as "EOD" or "BBFN."