I was bumbling about on Arxiv.org and I discovered in the Fluid Dynamics section that:
a) somebody had unspent grant money left over.
b) there is a Law of Urination.
Apparently all large mammals take approximately 21 seconds to urinate. Though the standard deviation of 13 seconds makes me doubt just how much of a Law this is.
Anyway this amused me.
Edit because the video is awesome.