A meme taken from episode 23 of the Fate/Stay Night anime, where the idealistic hero Emiya Shirou, overcome by emotion, confidently shares his worldy wisdom with his Servant, Saber. While actually a play on a idiom that describes incredibly tough people who "won't die if they're killed", the quip was literally interpreted and rapidly rose to acclaim on /a/ as an ironic and mocking example of how characters can be vigorously passionate yet painfully thick.