So many people have a difference of opinion when it comes to the definition of ironic. Some people confuse coincidence or sarcasm with irony. There is of course the official dictionary definition of irony:
Irony:
1. Expression in which the intended meaning of the words is the direct opposite of their usual sense.
My friend and I had a conversation once about Alanis Morissette's song "Isn't it Ironic". Basically all of her examples in that song are not true representations of the term irony. Rain on your wedding day, a traffic jam, when you're already late, a no smoking sign on your cigarette break, a man who's afraid to fly and his plane crashes. All of these are examples of bad luck and sometimes horrible coincidences, but are not truly ironic situations. After much discussion we DID conclude however, in a most delicious and hilarious way, that writing a song entitled "Isn't it Ironic" in which no content contained actual examples of irony, was INDEED ironic! So did Alanis know this all along? She must have - and still the debate lingers on. Here's a few links on all you'll ever need to know about the term Irony. Learn it well then lord it over others.
http://webweevers.com/irony.htm
http://en.wikipedia.org/wiki/Irony