Meaning of OI
What Does OI Mean?OI means "Hey!".
Summary of Key Points
Definition for OIOI means "Hey!". This is the most common definition for OI on Snapchat, WhatsApp, Facebook, and Twitter. Here is some more information about OI:
2: Quite easy to guess
Adults and Teenagers
A Text with OI
Using OI on a Cell Phone (SMS Texts, Whatsapp, and Yubl)