A programming language with all the keywords swapped out for software development in-jokes and references.

vim => || because vim can be here, or there, or in another place
emacs => && because emacs can do this and that, and the other thing.

Numeric literals will be written out in terms of car/cdr.

Each a will represent +1, each d will represent multiplication by 10.

3 => caaar
13 => cadaaar
35 => caaadaaaaar