The Brief: "You dropped this" Mario memes typically picture the video game character with a crown in his hand to indicate a person has done something heroic or legendary online.

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The “You dropped this” Mario memes are growing in popularity on social media. The image depicts a picture of the popular video game character with his hand outstretched and a crown sitting in his palm. The meme is meant to imply, “You dropped this my queen or my king.”
Similar to the comment “You dropped this 👑,” the meme is a response to a heroic, legendary, or iconic moment online. The moment is usually a brilliant meme, funny commentary, or a snappy clapback.
oooppsss chenle you dropped this : 👑 pic.twitter.com/9uH2vRAVqe
— 𝐊𝐞𝐥𝐚 !! (@lilchenlele) June 18, 2020
The meme has also been seen in other formats that do not feature a crown, but rather ,another object to create a humorous response. It often changes the good-natured meaning behind the “You dropped this” meme.
— 𝕾𝖕𝖊𝖈𝖙𝖗 (@bbyspectr) February 25, 2020