So...I never wanted to bring the arrow to this forum...but warbirds has no line that is left uncrossed! And since the arrow has landed here...I wanted to use it a few times before it gets shunned into oblivion.
To explain what the line means:
It's from a video game, Skyrim, where a every guard says, "I used to be an adventurer like you, until I took an arrow to the knee". I haven't played the game before..but have seen video of it. It became a huge hit on youtube to post, "i used to x, until i took an arrow to the knee". X being anything from a cute kitten to a 40mm launcher.