The "how do you do, fellow kids" meme, but instead of Steve Buscemi it's atomicpoet's profile picture. He's wearing a shirt with the Meta logo on it, holding a skateboard with the Facebook and Instagram logos on it, and the text in the caption is "How do you do, fellow Fedizens?" Oh, and 1000 hours in MS paint.
https://mastodon.sandwich.net/system/media_attachments/files/110/444/353/387/237/349/original/a1fd297cd335c40e.jpg