According to wiki (which we all know is NOT a reliable and true source when doing real research, right?....right??) an interrobang is "a nonstandard punctuation mark used in various written languages and intended to combine the functions of the question mark (also called the “interrogative point”) and the exclamation mark or exclamation point (known in printers’ jargon as the “bang”). The glyph is a superimposition of these two marks."
It's a question mark superimposed over an exclamation point, people.
How cool is that?!!
|Image credit: http://www.absurdintellectual.com/2009/02/18/interrobang/|