If you make a marco that looks like this:
/talk
and put it on a spot were the place is keybound, when you press that key and have all the texst gone then your charater will do that emote.
You can replace "/talk" out with other emotes as /dance, /sit and a lot of others.
Here's a link with all the diffrent emotes there's in wow.
http://www.wow-europe.com/en/info/basics/emotes.html