When someone tries to bypass an awkward situation when they're around people they have nothing to say to by pretending to be busy doing something with their cell phone. In fact, they know they're just looking at old text messages and lightly tapping the buttons or something.
Generally for people who don't know how to make idle conversation.
(One person is on the elevator when another person they KINDA know steps on)
This law of nature states that if you see a grossbug in your room and it crawls out of sight, it could be anywhere in the room. It follows that there is a significant possibility it could be about to crawl onto you, and this fact will eventually freak you out.
Borrowed from the Heisenberg Uncertainty Principle, which states that both the position and momentum of an electron cannot be known.
I just saw a spidergo behind the desk, and by the Hiding Bug Uncertainty Principle it could come out of nowhere and crawl on me at any moment.