O4U
Only for you
Example
Thx 4 the flowers!
O4U honey!
O4U definition by Slang.net - The Slang Dictionary
This page explains what the acronym "O4U" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.
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Something that is O4U is "only for you." This acronym can be used to a) express loyalty or b) convey that the information in a message is secret.
For example, if your husband asks who you have eyes for, you can answer "O4U." Or, if you just shared secret information with a friend, you can tell your friend the information is "O4U, don't tell anyone."