Just for reference, since they are somewhat unconventional...

Confused smiley* = :s

Cool smiley* = 8-)

Drool smiley* = :B

Grinning smiley* = :D

Mad smiley = :mad:

Sad smiley = :(

Sleepy smiley = ¬_¬

Smiling smiley = :)

Surprised smiley* = :O

Tongue sticking out smiley = :p

* - Description with * denotes case sensitive simileys.