Why so serious

[Tina]

Originally a [Batman] marketing campaign, why so serious can be used as a response to someone taking themselves or a particular topic too personally or seriously.

[Couch Potatoe]

The phrase the villain The Joker played by Heath Ledger uses in the new Batman movie, The Dark Knight when he asks his victims why they are always so serious and not smiling.

[PussyCat]

1. Lets put a smile on that face!

2. A response to someone acting serious and/or angry.

[Ernesto]

The most popular phrase from [The Dark Knight]. used by fanboys and the genuinely joker-like characters alike. Although its a [cool thing] to say, say it to much and someone may [punch you in the face].

[Justin Bieber]

[First off], this is used mostly by emo kids who use it for a picture [caption] on their myspace. People who say it dont realize how annoying it is. Also, asking why so cereal? deserves a punch. [Just wait] until another movie comes out then steal shit from there too!