Someone once gave me a bumper sticker that read "Meandering to the beat of a different drummer." That pretty much hits the nail on the head.
I am more prone to staying in than going out, but I do make a point of getting out of the house now and again. I've nothing against a pint or three with friends, but I'm just not really into the so-called bar scene for its own sake.
I'm a confirmed smartass; it's hardwired. Mostly I do a pretty good job of keeping it restrained to the appropriate times and places.