@anon281024: Stating no one understands irony while making a wrongful claim that the only thing ironic about the song
"Ironic" is the title.
Situational irony is rife throughout the song. There is also at least one verbal irony expressed through sarcasm. If one buys into Cosmic Irony, then the entire song is ironic.
Funnily enough, the supposed explanations people come up with to make the situations in the song truly ironic often don't make the situations any more ironic. Which goes to show you, people don't understand irony since they cannot recognize it, unless it is spelled out in excruciating detail.