I just stumbled onto nose picker filling up his water bottle at the cooler.
As you can see from the above picture, the space between the spout that the water comes out of and the bottom of the opening is not very large. This means you occasionally accidentally touch the spout with the mouth of your bottle to refill it. I have been doing this for years. I didn't think anyone else was doing this. I'm the only one in the office who drinks from a bottle. OR SO I THOUGHT. Now that I know I am "sharing" the spout with at least one other person, I find the whole thing rather disgusting.