I have a strange hang-up/interest in people's concept of irony. I am not sure Alanis Morissete would be able to find any irony in this situation.
I guess you could say I have a hang-up about your hang-up, or an interest in your interest. ;)
To be honest i think most people's definition of irony is largely shaped by Alanis Morissette's terribly misinformed but catchy song and the hipster d-bag that says he has an "ironic mustache."
I think it is the evolution of language that is interesting? It seems like we have a case of the more a word is used the definition becomes less concise until it carries no meaning. There has to be some linguistic jargon for this type of situation.