'Pinky Slang' is a new website that is dedicated to fleshing out the meaning behind every hand signal. 'Pinky Slang' takes crowd-sourced hand gestures and their explanations and posts them up for the world to share.
'Pinky Slang' is the "Urban Dictionary" of cultural sign language. While most gestures and their explanations are tame, some border on vulgar with the most noticeable example being the sign for 'The Shocker.' The website is still in its infancy, but I expect 'Pinky Slang' to grow into a thriving online archive for all gesture-related communication.