That part of bug triage where you say "oh that's easy; I'll just fix that now" and then you realize it's in a regex and one wrong move could accidentally summon Cthulhu or something and you decide someone else should fix it.
@cellio
There's so many programmers out there who call you crazy every time you try to do something simple like write machine code directly with a hex editor, but then they'll blithely jump in to edit a regular expression for a valid email address.