Someone help..

[RAWisSYDNEY]

Can y'all tell me what the following things mean..

WAG?
IIRC?

and all the other things u ppl say to each other which are abbreviated?

[SmackFu]

Here's the super-duper acronyms post from ATMB: http://boards.straightdope.com/sdmb/showthread.php?threadid=2528