I went into my dorm floor's communal bathroom this morning, and as I approached the handicap-friendly toilet, I noticed some, uh, tiny bits of excrement that had not been thoroughly flushed. There must have been some sort of turbulence in the toilet water there though, because they were dancing around randomly in the bottom of the bowl.

The first thing I said to myself was "huh, Brownian motion"

And then I struggled not to burst out laughing.