Well... I heard joke that Getting arrow to the knee means gettin married in northen... so.. =3
Yah, it is a very rare thing to use nowadays but back up couple of hundreds of years and it was fairly common saying.
Long ago...CHUG!shakeUntil one day...Coming up~Bartender, one for him tooAnd then...AHHHHHHHH~~~~!!!!
My KNEE!!!I used to be an adventurer...Until I took an arrow to the kneefrozenI married the owner of that arrrroooww~!!!!My friend, everything can be remedied by time...