How do you do the Poptropica emotes?

You can only do it in a chat room. There are little faces like a mad one sad one happy one and laughing one. You click one of them and wait a moment then you do something. Plus if you buy one of the new outfits with credits that say "press spacebar to see action" then you put it on and press spacebar you will do an action. You can do this in or out of a chat room.