blue check mark 

Twitter's icon on the user profile page verifying that a high profile user name actually belongs to named user.

They are just letting The Blue Check Marks know the feeling is mutual.

blue check mark by Coach KPR August 30, 2017

Blue Checkmark 

Someone on Twitter who thinks they are famous but in reality nobody has heard of (usually a B-list celebrity or a journalist who writes for a little-known leftist publication). The main factor which separates them from the verified accounts belonging to real celebrities is that the Blue Checkmarks lack the self-awareness to realize that nobody really cares about their opinions, yet they act as though they are God's gift to political discourse as they spout their self-righteous hot takes on Twitter.

Of course all of the Blue Checkmarks came out in droves to virtue signal about the latest election news.

Blue Checkmark by Russian Dumplings November 24, 2020

Blue Checkmark 

a term describing someone who is verified on Twitter, giving them a blue checkmark, hence the name.
the term is a pejorative, predominantly used by right-wing people to describe left-wing journalists who tweet things that either are stupid or exactly what they expected from a person with the checkmark. usually both

the Blue Checkmarks are dishing out hot takes again

Blue Checkmark by gingerwithasoul_ July 4, 2018

Blue Checkmark 

A slur against "verified" Twitter users, who have a blue checkmark by their names. It's usually used to refer to journalists and prominent political figures.

If this Blue Checkmark keeps talking smack imma silence his ass!

Blue Checkmark by ♓️🅰️🅿️🅿️🈂️ June 8, 2019