Not in the OED. Apparently, it's a very recent neologism.
Did you really open some physical edition of OED and look this up?
do you put a little hash mark next to every word you've looked up
also...
However, it has a synonym, epicaricacy, that appeared in a small number of 18th century dictionaries but has failed to enjoy the same success.You need to expand your dictionary collections it's looking like
this is a cool new thing I learned
Interrobang: - a punctuation mark ‽
sounds like a good band name to me