The sharp sign (♯) [1] is actually a different symbol than the number sign (#) [2].

[1] https://en.wikipedia.org/wiki/Sharp_%28music%29

[2] https://en.wikipedia.org/wiki/Number_sign

In Australia (or maybe it was just me?!) we called it "hash" not "sharp"... so #! was "hashbang". The beauty of this system is that #| is "hashpipe", so it _must_ be correct.