And to show off another fun character, for languages like Spanish that start a question with an inverted question mark, there's also ⸘, the inverted interrobang.
Though I find the name some people call it, gnaborretni (interrobang backwards), much sillier.
And yes, I love the interrobang! Ever since I mapped scroll lock to "compose" on my keyboard, I've had fun typing all sorts of characters :)
[0] https://www.fileformat.info/info/unicode/char/203c/index.htm
[1] https://www.fileformat.info/info/unicode/char/2047/index.htm
203C;DOUBLE EXCLAMATION MARK;Po;0;ON;<compat> 0021 0021;;;;N;;;;;
203D;INTERROBANG;Po;0;ON;;;;;N;;;;;
2047;DOUBLE QUESTION MARK;Po;0;ON;<compat> 003F 003F;;;;N;;;;;
2048;QUESTION EXCLAMATION MARK;Po;0;ON;<compat> 003F 0021;;;;N;;;;;
2049;EXCLAMATION QUESTION MARK;Po;0;ON;<compat> 0021 003F;;;;N;;;;;I first heard of it back when Usenet was still the hotness.
Apparently it's been around for close to a century, so if it hasn't caught on widely by now, you're probably right.
This is the first (and probably last) time that I will ever see the words "Usenet" and "hotness" in the same sentence.
Well done, sir.
On a typewriter, you could type one punctuation mark, backspace, and then type another.
Even once computers added the interrobang to Unicode (or older systems), you either need to type in a numeric code, use a secret bucky bit, or select it from a graphical UI, none of which is worth it for more than the odd weirdo with a whimsical streak.