A lot of people gave a lot of good answers.
And we didn't even get into the ***** that is pissing with a hard on.
Oh many a morning...
EDIT: Though in general, I'm a good enough shot, it goes in the bowl (and I don't drink, so I can't answer the subsequent drunk question).
But yeah, unpredictable this, nightmare mode that, foreskin, urinals, sitting, blah blah blah.
You'll appreciate our ability to stand when you have to go camping with a guy in a deep forest some day, and we keep the coyotes away. Footnote: the higher up you piss, the bigger the other animals think you are.