<wob_jonas> perl -eopen$i,"<",($f="wisdom/aristotle");$_=<$i>; s/(fifth) kind of vitreous/$1/ or die; if (1) { open$o,">",$f; print$o $_ or die; } print substr$_,200;

Esoteric languages. Usually refers to programming languages designed to be unique, difficult to program in, or just plain weird. See https://esolangs.org for more.