No Introductions
You know when you meet someone, at a party, at a dinner, at work, and you just start talking, and somehow the talking keeps going, so to capitalize on the non-awkward pace of things, you just keep going along without ever having stopped for that introductory moment of "oh, and by the way, my name's.." So then an hour later you guys are best friends, but you wouldn't even be able to get their attention across a crowded room without throwing something at them.
In conclusion - introductions are important.
[Photo via @derekblasberg]