clutch button problem

hey u know the button u push before u start that truck? well my runner starts without pushing that button. why is that?

its a 87 4runner

You don't have a problem. The only time you should be using that override switch is if the safety switch operated by the clutch becomes inoperable. If your starter cranks without you holding the clutch to the floor, that would indicate that someone has wired around the clutch switch.