“I Took an Arrow in the Knee” is a catchphrase from the role-playing video game The Elder Scrolls V: Skyrim which inspired the snowclone phrasal template “I used to X, then I took an arrow to the knee.”
In The Elder Scrolls V: Skyrim, the town guard non-player characters (NPCs) repeated “I used to be an adventurer like you, then I took an arrow in the knee.” when the player walks near them.
The restating of such a specific story over and over again by so many different guards caused it to be noticed by players, who then proceeded to post about it in gaming forums and image boards.
I used to be an adventurer like you, then I took an arrow in the knee.
I used to give a fuck, then I took an arrow in the knee.