This song is ironic because the singer is listing a series of events that are not actually ironic, but are instead examples of coincidence or misfortune. For example, the singer says, "It's like rain on your wedding day," which is not actually ironic because it's just an unfortunate event. The song is also ironic because the singer is singing about how ironic it is that these things are happening to her, when in fact they're not actually ironic at all.