PC.net

COS

Meaning Child over shoulder
Type Acronym
Popularity ★ ★ ☆ ☆ ☆  Uncommon
Usage Online Only (chat, messaging, e-mail)
Comments

Means a child on the recipient's end is watching what you are typing.

Example "COS right now, so if I seem a little distracted, that's why."
Updated February 14, 2022
Information from PC.net
https://pc.net/slang/meaning/cos
space