The 'table talk' verb is used to speak to other people on/at the same furniture as you, without the rest of the room being able to see it.
tt <whatever> You character says <whatever> tt :<action> Your character does <action> tt emote <action> at/on furniture.
tt `<player> <whatever> Your character says <whatever> tt to <player> <whatever> to <player> on/at furniture.
You can do any of the above by simply adding 'ooc' directly after 'tt' (Example: tt ooc :smiles. will cause you to smile OOCly.)