Classic silly string prank 😂 | America's Funniest Home Videos

Silly String is an aerosol with a flammable propellant • A sparkler burns at ~1,000–1,600°C • Spraying directly through the sparkler’s spark stream ignites the aerosol instantly • The flame travels back along the spray path (called a flashback) • Hair products, hair itself, and oxygen around the head let the fire flare up fast So it’s not the string slowly burning — it’s a fireball effect caused by the aerosol mist hitting a constant ignition source. | StrangeandTerrifying