Never heard of either Jonesing or gagging for anything. We do have "keeping up with the Jones's", which is the term used to describe obtaining unnecessary things that others already have, simply to appear affluent, like buying a new TV when there is nothing wrong with the one you already have.
Over here the appropriate slang would be hangin' or tonguin' or even dyin', as in one would be hangin' for a burger, tonguin' for a beer and dyin' for a swim. Note that it is usual for Aussies to ignore the g on the end of words. We would say for example, "Are you comin' or not?
Santa, I have to admit that while I have eaten the Works Burger, pineapple is not on my usual extras list. Bacon ang egg, must have, and cheese is depending on mood. I will also say that I fall into the beetroot camp of take it or leave it, but I don't object to it.