Interrobanging

Have you ever interrobanged? 

You may well have done when describing, for example, a lollapalooza or ninnyhammer.

I, to my shame, did so whilst answering an email which contain the word callithumpian.

I fired off a quick emailed query regarding said word to the originator of the email and 

I used a multiple interrobang.

I kicked myself ,almost as soon as the email departed my laptop, as realisation

dawned that someone somewhere would know there was a word out there that 

I didn't know!

I do now!