Relevant blog post 'Now They Have 2FA Problems':
Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems.
The article quotes it, but doesn't mention the source. Jamie says he was repurposing an older "sed" quote. Safe testicle-free link:
http://regex.info/blog/2006-09-15/247#comment-3085
I bet I've written more and harrier PostScript code than he has, though! And as a monster raving loony, I'll defend PostScript as being “readable” any day! ;)