The thought of a person or a thing that mentally crawls inside you and interferes in your day-to-day
activities. It consumes your every thought and hinders your
way of life. Much like the fish it was named after (the Candiru) which crawls inside you and lives inside, so do these
thoughts.
George: What’s your problem?
Izzie: My problem…is you. You’re my penis fish.
George: Your what?
Izzie: You’ve crawled in and latched on, and now
I can’t move, or talk, or think, or even pee
without the necking feeling that
something is eating through my organs!