Legend has it that this term was first coined in the 1940's by a Jamaican named
Antoine Cleo.
Antoine Cleo believed that filling the area of a popsicle with deadly radiation, could be used against certain countries as biological warfare. He believed that the radiation had certain brainwashing chemicles inside of it and that placing the popsicles at stands at random areas could allow more people to buy the popsicles, thus was his plan for world domination.
However, his plans were soon foiled when a strange
cult called the Kindred Spirits (The Cult leader was Later identified as a man named Dushka Deshvky) blew up all the popsicle stands in
America, including killing the perpetrator, Antoine Cleo.
"Lets blow this popsicle stand" was then started as an inside
joke between
4 teenagers, then it spread throughout the United States, the phrase from then on meant, "Lets get out of here fast, before something bad happends to us."
Now
maybe after hearing this, we can walk away a little wiser about what this phrase means.