Write about a misnomer that drives you bananas. Or, write about more than one.
(My current annoyance is the colloquially inaccurate use of “Type A” to be something flattering and “go getter”-y. Because in psychological-sociological terms, Type A’s may stomach workaholism wonderfully, but they’re also controlling, outburst-prone hot-heads, so maybe reel it in on wearing that badge so proudly, mmkay?)