men socialize by trading insults, but they don't really mean it. women socialize by exchanging compliments in the same manner.
Mostly 'cause we're afraid we actually have been introduced and don't want to admit we've forgotten their names.
One of the guys I work with, I've forgotten his name a few times, and I've also called him Chris, Jim, Shane, and Ryan. His name is Carlos. And I'll probably call him the wrong name or forget it again. He's the only one I do that with.