backreading

Scrolling up (or scrolling down, depending on the chat app) through a group chat reading every. single. message.

"Dude, why were you online in the group chat but didn't say anything?"
"Sorry, I was backreading about 1000 messages."
"Dude, you have no life."

Backread

To read earlier events in a group chat for further context.

Person 1: "Dude, what the hell happened while I was offline? Why did Person 2 leave?"
Person 3: "Backread from like 30 minutes ago. Crazy shit happened."