In the US yes
I'm surprid that someone hasn't patented going to the toilet yet. I the US you can patent just about anything. Hell they were going to allow patenting of the human genome and specific genetics a while back. Prior art and information in the public domain mean nothing over there until it is challenged in court. Hence apple have a patent for a tblet that look very much like tablets more than 5 years before the ipad launche - don't tell the Mac fanboys though, they may not like it. In case no one knows what I mean try looking at the HP tc1100 and the Samsung Q1 - apparently not similar enough to invalidate a patent for something that is basically thinner and a slightly different frontal area, how different for the tc1100 beats me but not by much.
Anyway I plan to patent the human in the US one day, see if they allow it.