Have a discussion about the origins of the Universe and, ere long, someone will inevitably use the term "the Big Bang" to describe the initial moment of expansion of everything that
was
to everything that
is
. But in reality "Big Bang" isn't a very good term since "big" implies size (and when it occurred space didn't technically exist yet) and there was no "bang." In fact the name wasn't ever even
meant
to be an official moniker, but once it was used (somewhat derisively) by British astronomer Sir Fred Hoyle in a
radio broadcast
in 1949, it stuck.
Unfortunately it's just so darn catchy.
This excellent video from
minutephysics
goes a bit more into depth as to why the name is inaccurate -- even though we'll likely continue using it for quite some time. (Thanks to Sir Hoyle.)
And you have to admit, a television show called "The Everywhere Stretch Theory" would never have caught on. Bazinga!