A
person whose entire life revolves around one thing and who is perfectly
happy remaining ignorant of real life and the outside world.
Like how a fish is perfectly happy inside of their
bowl, not even caring that there is an entire ocean out there.
Jeremy is such a fish. All he does is go to the gym, talk about the gym, eat at the gym, and
think about the gym. Does he do anything
else besides the gym? No, because he's a fish.