Again
What's under the lid on your cook pot? Legs and fins. Again. All you know how to cook is legs (of chicken) and fins, so you cook them again and again and again. You'll be having them for dinner tonight, and again tomorrow, and again the next day. Legs and fins, again and again and again, for the rest of your days.
Alternatively, you can also think of this as a laundry hanger with a pair of pants and two little socks flapping like fins. Because laundry is something you have to do again and again… whether you like it or not!