Berserker Brush

This is the king of brushes. Hair brushes, deck brushes, and all other brushes tremble in its presence. When angered, it vibrates with rage and lets loose a high-pitched bellowing noise.

I don't know if the S.S. Dolphin II made all that up or not, but it was frightening enough that I'm going to brush my teeth—very carefully—and head to bed.