An abbreviation that is widely used in texting and chat, and on Instagram, Twitter and elsewhere on the internet, but what does S/O mean in slang?
Most Common S/O Meaning
S/O stands for Shoutout.
S/O is used, mainly on Instagram, to refer to the practice of publicizing and endorsing another user by uploading a screenshot of their profile page on to your account. By shouting out to other users, you may get shoutouts to your account in return. S/O is also used as an expression of gratitude to someone.
S/O to @wanderingstarlet for great travel pics.
Alternative S/O Meaning
What Does S/O Mean?