A little tip :
When you go to hi-five someone else you should look at their elbow. And they should look at yours. And you will NEVER MISS.
Think of it- never again will you have the embarrassment of by passing that waiting hand, and slapping dead air. The blush that creeps up when you both look away and laugh about it -then try to forget it ever happened.
You will be hi-fiving everyone. Your friends, your colleagues, strangers on the street. You'll be hosting hi-fiving parties (ok- maybe not and if you are then you are a loser).
But really- for this little portion of your life this tip will be very helpful.
Go on, spread the word.