it's described as "person with folded hands", only some show the person though http://unicode.org/charts/PDF/U1F600.pdf …pic.twitter.com/s5j67vsNFd
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
The original set were from Japan, reflecting Japanese expressions. But even then, use diverged.pic.twitter.com/qcAqkg2nx6
not saying you were wrong! but talking about what they "really" are, unicode description might as well be final prescriptivist judge :P
I didn't know they were open to contextual ambiguity. Unicode smarter than I thought.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.