This is the near side front door hinge area. Car interior to the right, open door to the left.
The thing sticking out at45 degrees downward is black rubber, and its in the form of a squeezable rubber tip, with a hole through it. That's what got blocked. It feels like a cross-head screw driver, but bigger and when you squeeze it, the hole opens a bit. It is the point where the rain comes out from the sunroof surround if water make sit past the seals of the sunroof.
There is another in the drivers side front door opening, and two at the rear of the car, under the back bumper near the wheel arches. These two rear ones are connected somewhere back behind the sunroof mechanism and run the length of the roof, down the rear pillars and drain under the rear of the car.
Hope this helps someone else