There's a site that generates random "facts" that are best known as Chuck Norris jokes. For kicks I entered in "my goldfish" as the name to use, and it returned this:
My goldfish sleeps with his eyes open.
Well, duh! They're fish, they have no eyelids! LMAO!
I was also amused by:
My goldfish is the reason why Waldo is hiding.
and
My goldfish qualified with a top speed of 324 mph at the Daytona 500, without a car.
Unfortunately the rest of the generated answers really weren't that funny (and a couple were mildly offensive), just a lot of the same old Chuck Norris jokes. But the "sleeps with his eyes open" one cracked me up.