Interrobang

What on earth is an interrobang‽

Source: tatoeba (5650927)

Has anyone seen an interrobang? It's a newly invented punctuation mark that looks like this: ‽ A question mark with an exclamation point superimposed, it's meant to convey that nuance of feeling—a mixture of query and surprise—that people have in mind when they say "Really?", also meaning "Really!", or "How about that‽" […] The cure for incredibility is not more punctuation, but more plain talk. We don't need symbols like the interrobang that merely express our perpetual disbelief. We need plain words to express plain truths.

Source: wiktionary

The Interrobang is not a font – just a single character. Yet it is so powerful a symbol, and such a flawed and original concept, that it deserves a place alongside the most adventurous typographic innovations of the last century. It is an exclamation mark and a question mark combined, a ligature looping the curve of the interrogation with the downward force of the expletive (which compositors and printers have traditionally called a bang). When they meld, they need only one round point at their base.

Source: wiktionary

Popular as it was with writers and admen, the interrobang faced a struggle for mainstream acceptance. Simulating an interrobang on a typewriter was possible, if clumsy—type "?" and then overstrike it with "!"—but for typesetters creating a printed document, there was no such shortcut. Those advertisements, brochures, and books that actually honored the writer's use of the character had to be set using handcrafted interrobangs, either drawn by an illustrator or sculpted from rubber cement with a razor blade.

Source: wiktionary