Both these programs should work on any flavour of UNIX which has 'lex'.

finn:
will turn English into bad English, such as one sees written by certain
finnish persons.

biffa:
will turn English into Geordie, such as one hears spoken by Tynesiders.
NB It contains rather a lot of bad language, for realism's sake.

Written by Stephen K Mulrine <smulrine@cs.strath.ac.uk>
Make copies if you want, I don't mind.

Extra Biffa words added by loki@moncam.uucp

biffa is named after Biffa Bacon, a character in the Viz Comic (tm), who
speaks somewhat like that.