If you are ever invited to ride in the back seat of an extremely expensive military fighter jet, KEEP YOUR HANDS OFF THE FUCKING BUTTONS
and bear in mind that your eject won't be a button, it will be some kind of mechanical actuator. A lever or a rope or what-have-you.
If you're going to rest your hands on it you had better be VERY SURE that it is not something you're not supposed to keep your grubby mitts off of. If it is a different color than its surroundings then DO NOT TOUCH IT. Best just not to touch anything unless the pilot explicitly says to!