SARTRE

SARTRE was originally a fictional programming language invented as a joke by John Unger Zussman, published in a list of "lesser known programming languages" in 1982, named after Jean-Paul Sartre, a French existentialist philosopher. He described it like this:

SARTRE is an extremely unstructured language. Statements in SARTRE have no purpose; they just are there. Thus, SARTRE programs are left to define their own functions. SARTRE programmers tend to be boring and depressed and are no fun at parties.

The joke was expanded by John Colagioia (sometime ca. 1998-2000) to describe a complete esoteric programming language, but no implementations are known to exist.