There have been a number of humorous references to "the guy" in sit-coms. The guy is the expert: the person who fixes and/or handles things. He can be a computer techie, a TV repairman, a plumber, etc. These days, "the guy" is sometimes a gal. The message in sit-coms is that if you try to fix things, yourself, you'll fall off the roof and be bed-ridden or you'll wind up calling your father, if your father is handy. In fact, some people have a handyman to whom they regularly go when anything breaks down as the handyman, frequently, knows how to fix a variety of things and that's why he's called a "handy" man, i.