The horn in an automobile. Used in conversation to describe the idiotic act of continuously honking the car horn for several seconds instead of doing what is safe and prudent while traveling at an unsafe speed... applying the brakes.
So named for the unfortunate driving practices of Mexican cab drivers.
Also known as the Egyptian brake pedal.
Yo Vashon! Don't slow down at that intersection. We are going to be late for our drug deal! Give 'em the Mexican brake pedal... those pedestrians will get the Hell out of our way!