As far as I can tell, there is no mention of “Heckler’s Joke Shop” on the internet. I hope I’m wrong, but just in case, I’m mentioning it here.
If memory serves, Heckler’s Joke Shop was near 39th and MacArthur in Bethany, Oklahoma. In the 70’s, it was the place to go if you wanted a ring that squirts water or plastic vomit.