Mr. Smarty Pants Knows
Burgess Meredith once sued Larry Hagman because he said the height of Hagman's roof was two inches too high (they were neighbors and on-again, off-again friends).
In chess, when a knight is able to attack more than two pieces at the same time, it is called a "family fork."
The recent discovery of the Higgs boson particle came thanks to the Large Hadron Collider. With a circumference of 27 kilometers, it is the largest particle accelerator in the world. You could think of it as the biggest, most powerful microscope in the history of science.
In NHL hockey, if a player hits another with his stick, it's called "high sticking." If the offending player draws blood, it's a four-minute penalty. No blood, only a two-minute penalty.
It's considered impolite to speak with another astronaut who's upside down or at a different angle while in zero gravity.