Today has been declared National Fist Bump Day by, well, by people who apparently don't have very much to do.
It commemorates the day one year ago when Barack and Michelle Obama knocked knuckles after he locked up the Democratic nomination. Some TV talking heads later questioned whether it was some islamo-fascist-black-panther-trilateralist-anarchist secret sign. (These are apparently people who don't watch much sports on television.)
Anyway, feel free to bump, or not bump, as you see fit.