While on the last steep-ish descent before getting back home from a walk

me> ouch. stop a second, there is a union agitating in my knee
@Diego Roversi > have they started banging pots and stuff to make noise
me> yes, and it's just on one knee, not both
diego> left or right?
me> left
diego> of course. leftist agitators

(management offered moving a bit more weight to the arms (through an hiking stick), the union was ok with the proposal and I got back home with no more issues)