queshtimation mark

!!!!!!!!!!

What is this symbol?, I asked my son in a teacherly manner while he was practicing reading.

A queshtimation mark, he replied. I corrected him, but thought, wow, that's a pretty cool word he stumbled upon.

So henceforth I am naming "?!," which I frequently use when emailing, the queshtimation mark, in honor of my blossoming wordophile B.