You could also accidentally summon an Ancient One while trying to write a regex :D
Perl is a fine language, but it's like using a wood chipper with no safeties. It takes extreme care and know-how to use it without splattering ASCII everywhere and making an unmaintainable write-only mess.
For every beautiful and maintainable perl program (mostly irssi scripts) I've seen 99 abominations that are quicker to rewrite completely than decode wtf they are doing.
