A Subtrope of Big Eater and Extreme Omnivore in which a character (sometimes more) eats a massive portion of food, sometimes much bigger than they are, really fast. Some cartoons even give the act a sound effect like that of a power saw or woodchipper.
- In Episode 55 of Dragon Ball Z Abridged, Gohan chews through an entire leg of meat with the motion and sound effect of an orbital sander.
- The titular Coneheads all make use of this trope when "consuming mass quantities", including their daughter, who impresses a would-be boyfriend by eating an entire foot-long Subway sandwich in about three seconds.
- In Cats Don't Dance Darly Dimple does this to a hot dog from her gift basket of food near the end of the film.
- The Taxxon of Animorphs have a literal Buzzsaw Jaw. Their mouth is a gaping hole with rows of teeth. Each row can be twisted back and forth at high-speed to create the impresion of a buzzsaw.
- In The Langoliers, the titular Clock Roaches have huge mouths that can tear through everything in as much time as it takes to read this sentence. The Film of the Book takes this one step further by giving them three rows of alternately rotating metallic teeth, making them look like a cross between Pac-Man and an excavation drill.
- Happened at least once with Larry Kubiac on Parker Lewis Can't Lose.
- This became a running gag on Family Ties when Meredith Baxter-Birney had to take time off for pregnancy. Her character, also pregnant, was kept offscreen, frequently demanding and buzzsawing food. They once claimed she ate a whole watermelon in a handful of seconds.
- Mileena uses this to eat an opponent's head (or entire body) as a fatality in Mortal Kombat. Reptile does so too, in one game snagging a victim's head with his long tongue and swallowing it, and in another, devouring most of the victim's body in three parts the same way.
- Just about any depiction of piranha you can think of.
- Sort-of Truth in Television, since piranha in a feeding frenzy are feared for a reason.
- Termites too.
- Two of Chuck Jones' Tom and Jerry shorts featured Jerry befriending a tiny dog that did this often to Tom
before hammering the hapless cat into the ground!
- In the MGM era, Tom actually took advantage of this - Spike's held back by a leash, and Tom uses his fruitlessly gnashing jaws to carve a log into a bat.
- Tex Avery's Billy Boy features a goat who does this throughout the cartoon. (Of course, said goat's definition of "food" is an extraordinary broad one.)
- An episode of Shaun the Sheep features one too.
- A number of cartoon beavers, like Bingo "Bet-It-All" Beaver from The Get Along Gang.
- A number of cartoon termites do this, reducing a table to a pile of sawdust in mere seconds.
- Looney Tunes' Tasmanian Devil.
- Klaptrap in the Donkey Kong Country cartoon.
- The Parasprites in My Little Pony: Friendship Is Magic
- Nibbler in Futurama as well as all other Nibblonians.
- The titular sponge from SpongeBob SquarePants once did this to sharpen a pencil.
- In Scooby-Doo, Where Are You!, Scooby rapidly bites a log in two after Velma tells him to "make like a beaver."
- Sawtooth, Rufus Ruffcut's pet beaver on Wacky Races.
- Blitz from Road Rovers did this occasionally... Once with a Mook's assault rifle ! Justified, however, as having ludicrously sharp teeth is actually one of his superpowers.