When in IRC chats there's the "/me" command to do your actions.
Just type it in like this: /me your action here, and it will print out your name and the action you just did.
Saying a nice greeting to everyone is the best way to catch someone's attention.
For a much bigger list the WBS Chat Book has a whole list compiled from various users from all over including various smileys!! If you choose you can use text editing to increase the size of your text to catch someone's attention.
This is most of the list from that place: AFAIK As Far As I Know AFK Away From Keyboard ASAP As Soon As Possible BBL Be Back Later BBN Bye Bye Now BBS Be Back Soon BEG Big Evil Grin BF Boy Friend BRB Be Right Back BTW By The Way BWL Bursting With Laughter C&G Chuckle and Grin CID Crying In Disgrace CNP... This can make your messages in bold, italics, or color.
Then the other person let it drop that he hadnt watched friends.
She immediately guessed it was my other friend on the Whats App group!!!