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!
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A girl who starves herself for a period of time then eats for the next period of time. like yo-yo dieting.
Anna the Anorexic: Dude, I haven't eaten in days!

Chelsea the Checkmark: Me neither. I don't eat for three days and then eat for one day. I'm a checkmark anorexic.

Anna the Anorexic: ...weirdo.
by Demma Dilemma December 3, 2009
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A reply made by youtube commenters when a verified youtuber leaves a comment on someone else's video
Youtuber: Great video, man!
Reply: what's up checkmark
by Redthetroll May 16, 2021
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The Twitter Verified Checkmark is a blue checkmark on twitter. It let's people know if an account is notable. After November 9th 2022, you require a twitter blue subscription to receive a checkmark. You do not need a single follower, you only need twitter blue to get the checkmark.

Twitter blue is starting at $7.99/mo and is only available for purchase on iOS.
I got the Twitter Verified Checkmark yesterday!
by ToolifyStudios November 12, 2022
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