Are you familiar with the ‘interrobang’? Merriam-Webster defines ‘interrobang’ as:
a punctuation mark ‽ designed for use especially at the end of an exclamatory rhetorical question
Though seldom used, it was designed to replaced the combined use of a question mark and exclamation point, like in the following sentence:
She said what?! (see Interrobang)
To test your knowledge of lesser-known punctuation marks, try Mental Floss‘ ”$#@!: The Punctuation Quiz“.
To read more about punctuation and grammar, try:
- Eats, Shoots & Leaves, by Lynne Truss

- The Bare Essentials Plus, by Sarah Norton et. al. (this was assigned to me in an English composition class, and I found it to be very helpful)
Do you like Eats, Shoots & Leaves? I’m always trying to find good things to excerpt for my freshman comp classes.
I actually haven’t read it, so I can’t comment on it.