An "obfuscation" is a piece of working Perl that has been deliberately written in an obscure a manner as possible. The Obfuscated Code section is full of them.

"Obfuscation" is a form of the transitive verb "obfuscate", which means "to make obscure" or "confuse".

What you need to write an Obfuscation is a twisted brain, a finely honed sense of the absurd, and lots of practice. (And the judgement to avoid doing obfuscations anywhere near production code.)