The Tonight Show' host has been accused of using a joke from the 2009 "Fishsticks" episode of 'South Park' in his monologue.

The sarcastic fringehead is a small saltwater fish with a jaw that can expand four times its normal width, and it puts that jaw to surprisingly bizarre use when a neighbor gets too close.

Explore 25 awesomely nerdy and humorous animal species names! Scientists reveal their witty side with pop culture references ...

The joke is one of the more memorable in the South Park lexicon.

There’s nothing funnier than a well-timed wisecrack, corny one-liner or solid dad joke. Even when they’re bad, they’re still good, which is why we love them. For instance, you may remember Carrie ...

Of all the cinematic genres, comedy is the hardest to truly master. Humor is so context-dependent and changes so wildly from person to person (let alone between generations) that many comedies ...

The leaves are changing, the air is getting crisp, and the pumpkin spice is finding its way into absolutely everything. That can mean only one thing: It’s time to break out the fall jokes. (They pair ...

Did you ever wonder why astronauts don’t like gravity? It brings them down. Why did the cake cross the road? It saw a fork up ahead. How about this one? What did the pirate say on his birthday? “Aye, ...