Slang for a guy who's, let's say, somewhat unendowed.
From "Hedwig and the Angry Inch", a very bizarre movie about a guy who has an operation to turn him into a woman, and it isn't entirely successful because the surgeon left an inch that was supposed to be excised, and Hedwig's reaction to this miscalculation, thus the title of the movie.
A meaningless, unimpressive, self-serving introduction. An indicator that the story about to be shared will be pointless and dumb.
Back when I lived in upstate new york, I also had to park on the street - on two occasions, we got enough snow, mixed with just the right plowing, that my car was lifted off the ground from so much snow being jammed underneath it.