If a cartoon character stops suddenly, there will be puffs of smoke and a sound akin to car brakes. This will occur even if said character is hovering or flying, because it's just funnier that way.
Their legs will be in front of their body. In more exaggerated depictions, they may bend forward heavily, dig a trench, blow on their feet afterwards to cool them down, etc.
- Simon stops with a screeching sound at the start of Return of the Cartoon Man's climactic chase scene.
- Scooby-Doo, frequently.
- Johnny Bravo, just as frequently.
- Cow and Chicken.
- A variant in Futurama: Hovering cars can and will screech to a halt.
- Classic Disney Shorts (and some of their movies for that matter), along with Looney Tunes, Merrie Melodies, MGM cartoons, and many, many, many other animated productions had, and still have this thrown in whenever appropriate.
- The Filmation's Ghostbusters did this all the time, especially on their way to the Transformation Sequence.
- Truth in Television on certain surfaces with certain types of brake shoes.