Alanis Morissette, wrote a very popular song in the 90s, called Ironic. It’s a great song, but unfortunately, she misused the word Ironic in the lyrics, repeatedly. Where she described unfortunate “murphy’s Law” sort of events as “ironic.” Because of it’s popularity, the generation that listened to music in the 90s took away an inappropriate definition and used the world inappropriately.
And I say this with all respect. I’m a Huge fan of Alanis, actually. But, she did use the word wrong in her song, now other people do too, and that is the reference.