Kevin Drum wonders where McCain's annoying habit of using "my friends" like a teenager uses the work "like" comes from.

He initially picked it up during the primary when he was doing the whole "I'm Reagan 2.0" thing:

One of Reagan's verbal flourishes was to interject the phrase "my friends" into his speeches, presumably to inject a sense of commonality and companionship into whatever he was saying. McCain having the keen political instincts of a Henry Clay and the insatiable drive of a DeWitt Clinton, stole the interjection and proceeded to use it as much as humanly possible, kind of like how Scientologists have you constantly relive a traumatic experience in order to move past it, except without the certificates of achievement or foot baths from Skeet Ulrich.