That’s 10 

When you, a friend, or anybody in the given situation says or does something that raises questions and/or awareness about what was said or done, stating “That’s 10” is a message to the entire group, (but with the focus of the offending person) that what they said was not socially acceptable and that a roast may be in order.

The phrase derived from the military training in the United States. When a lower level subject says or does something that a commanding officer does not find acceptable, they may say “that’s 10” in reference to 10 push ups.

In civilian culture, 10 push ups would be replaced with a discussion and/or roast about the subject

Subject: “I know she has herpes, but I would still smash, her ass is so fat”

Witness 1: “That’s 10”

Witness 2: “Yeah dude you need to not do that and take care of your body”

That’s 10 by MWSkate420 October 27, 2020

That's not very wholesome 100 of you 

What redditors will say when you say something mean to them

A normal person: ey you suck

Redditards: that's not very wholesome 100 of you

That's not very wholesome 100 of you by Sebby294 May 14, 2021