The code is also not meant to be cut'n'pasted, as there is automagic line wrapping. On all pages with code (or rather, with CODE tags) there is a link d/l code, which allows you to download all the code directly.
The Perlmonks website runs on the Everything Engine (or rather, a heavily modified version of it), and a link on the bottom of the pages brings you to the homepage of it.
perl -MHTTP::Daemon -MHTTP::Response -MLWP::Simple -e ' ; # The
$d = new HTTP::Daemon and fork and getprint $d->url and exit;#spider
($c = $d->accept())->get_request(); $c->send_response( new #in the
HTTP::Response(200,$_,$_,qq(Just another Perl hacker\n))); ' # web