Meaning Someone over shoulder
Type Acronym
Popularity ★ ★ ★ ★ ★  Popular
Usage Online Only (chat, messaging, e-mail)

Used in online chat to warn message recipient to be careful what he or she types since another person on the other end is watching.

Example "SOS, just so you know."
Updated October 26, 2016
Meaning Save our souls
Type Acronym
Popularity ★ ★ ★ ★ ☆  Common
Usage General (not just online)

Standard distress signal; represented in morse code by short short short, long long long, short short short; often used as a noun, i.e. "I sent out an SOS."

Updated January 30, 2013
Meaning Same old stuff
Type Acronym
Popularity ★ ★ ★ ☆ ☆  Average
Usage Online Only (chat, messaging, e-mail)

Common reply to "What's happenin'?"

Example "Anything new these days?
No, pretty much the sos."
Updated April 24, 2019
Meaning Someone special
Type Acronym
Popularity ★ ☆ ☆ ☆ ☆  Rare
Usage Online Only (chat, messaging, e-mail)

Not used nearly as often as "someone over shoulder."

Example "She is sos 2 me, so I hope she is happy."
Updated December 31, 2020
Information from PC.net