friend-shaming 

Act of using friendship to shame another person.

Simon says to his friends, "Let's get ramen." Vincent was not spoken to but he wants to go with Simon. Vincent friend-shames Simon by saying, "I thought you were my friend!" Vincent is friend-shaming Simon.

friend-shaming by lovemush July 17, 2017

Friend-shading 

The act of shading or talking badly about a close friend, to someone else. Most probably because they're acting stupid.

"Not to be friend-shading, but Lilly was a total bitch yesterday."

Friend-shading by yourunclesdeadcat June 13, 2018

Friend-shading 

The act of talking about and shading one of your closest friends to someone else. Most probably because they've gotten on your nerves, or are acting stupid.

"Sorry to be friend-shading, but Lilly was such a bitch this yesterday

Friend-shading by yourunclesdeadcat June 13, 2018