I was thinking. We have all these appliances around the house - the washer, the blender, the plunger - and all of them have names descriptive of what they do. The washer washes things, the blender blends things, but the plunger doesn't plunge things. It plunges itself. That name is very humanly in that sense. (I should have used the word 'anthropomorphic'. I've been trying to use that word in a sentence for years, and I just blew my one opportunity.)
Anyway, think about it. The plunger sounds like a nickname you could give a good swimmer or something. It would be like if we called the washer, "The Bouncy Noisemaker," or if we called the blender, "The Shaker-Upper."