I just saw someone two days ago doing this kind of emote (watch 0:12) but was running at the same time... It was so funny to see that
If you posted a video clip it never appeared.
Me? I'm dishonest, and a dishonest man you can always trust to be dishonest. Honestly. It's the honest ones you want to watch out for, because you can never predict when they're going to do something incredibly... stupid.
-Johnny Depp
I'm not sure if you can do it with every emote, but quite a few are able to me manipulated. Put your weapon away. You pick an emote (like lean-back coin flip) and select it. Then, as you're doing the emote, type /drink3 or select drink flagon on console and move forward right after. Sometimes it doesn't do it right and you have to try it a few times.
-Edit-
On console you need to have the emotes on your quickslot wheel.