the following (secret) emoticons can be achieved in facebook chat...
What's funnier than a penguin? NOTHING, that's what! You too can embrace the fun and natural humor of the most adorable winged creature with this emoticon.
With this, you can express one of two things.
1) You love classic video-games.
2) Your jaw is broken.
YOU LOVE HEADS
You not only have a bad case of rosacea, but also have two irregular growths sprouting from your head. But, you remain complacent, hence the smile. Good sport.
Use them wisely, don't let them spread too far. That is all.