What do you call a fish without eyes?

This absolute classic is a masterclass in linguistic surgery. The humor is pure wordplay, operating on the assumption that removing a fish's "eyes" is the same as removing the letter "i" from the word "fish." It’s a delightful bait (Review)-and-switch, setting you up to think about biology but delivering a punchline based entirely on spelling and phonetics. This type of pun, where a word is physically altered based on a spoken command, is the bread and butter of "dad jokes" everywhere.

Funnily enough, nature actually beat this joke to the punch. There are indeed fish that live without functional eyes! Creatures like the blind cavefish, found in underwater caves in Mexico and Texas, have evolved over millennia in total darkness. In an environment with no light, eyes are useless, so they eventually disappeared. These real-life "fsh" navigate their world using other heightened senses.

So while evolution created a fascinating creature through adaptation, this joke gets to the same place with a simple, clever, and groan-worthy pun. It’s a reminder that sometimes the silliest answer is the most satisfying one.