Originally Posted by
Gilmer 
A few years ago it was very popular around here, too--but usually 1 pair per line. I had no idea there was any secret meaning to it!
Well, I'm sure that some of them are just thrown up there because someone saw it in a movie or something. Or they were tired of their shoes. Or they were mad at their brother, so, "I'll show you!"
Or, I could be completely wrong. It's just what I heard from the young people in my downtown big-city office.