Thunderbrd
C2C War Dog
I guess I was taught that sarcasm is saying the opposite of what you mean, but with a tone of voice that makes it clear you intend to make the point you really mean to make that way, and irony is when the world or the events you are experiencing are being unusually significant with you in a wry manner. These definitions don't seem to match what I think of those terms at all... Almost, you could say, the opposite.
I wonder if there is a difference in the way some cultures or sub-cultural influences mean these words that perhaps some dictionaries haven't caught up with yet.