I'm implementing my own Lisp.
Having never really written anything in an existing Lisp dialect, this is of course hilarious.
The one thing that might set this one apart from others is the fact that the programs are JavaScript arrays.
It sounds utterly pointless, but I do have an application for it: I'm generating some TeX code in another project using nested arrays, and there are parts of it where I wish they could reflect or self-modify, and the code/data barrier is just irritating.