The "Thanos What Did It Cost" meme originates from the 2018 Marvel film *Avengers: Infinity War*. After successfully wiping out half of all life in the universe with a snap, Thanos enters a spiritual realm where he encounters a young Gamora, who asks him, "What did it cost?" to which he replies, "Everything." This poignant exchange captures the immense sacrifice made for a grand, often destructive, goal. The meme is used to convey the bittersweet feeling of achieving something significant, but at a heavy, often regrettable, personal cost. It's frequently employed in contexts where a victory or accomplishment comes with considerable loss, effort, or sacrifice, highlighting the irony or sadness of the "success."