Irony

Irony: the use of words to convey a meaning that is the opposite of its literal meaning.  

-Dictionary.com

How ironic that the things we say and who we are outside is so different from who we are inside. 

How I learnt the word:

friend:"....you? fat chance."

me: "oohh cool.. :)"

friend:"no dumbo, fat chance = slim chance"

me: "=.="

friend: now you know whats irony...

Its how when someone asks you: how are you? 

and you answer with a smiley face "I'm fine, thank you!" 

...When you're just dying inside