An open-handed slap says "you are low status"
A back-handed slap says "I am high status"
A punch is context dependentpic.twitter.com/LuODzqswUi
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
"Be Slightly Evil" by @vgr
I think it is only available via ebook: http://a.co/20PEB6n