So I've noticed that a few people in my office will walk up to the urinal, hit the flusher, and then start peeing.

My theories:
The thought of their pee touching someone else's pee grosses them out
Much like peeing into a river, the idea of urinating into a moving body of water holds some sort of mystical allure
They hate mother nature and want to waste as much water as possible
Fear of underwear gnomes?

What is the deal?