Today a dude pulled up next to me at a stoplight and said my brake lights don't work. So I come home and mess around and find out that the sensor that's attached to the brake pedal isn't doing it's job correctly. It seems like when I push the brake pedal it doesn't trip the sensor. I can push up the sensor and it turns my brake lights on. So do I need a new one or can this one just be adjusted somehow? and what's it exactly called anyways, since I've been trying to look it up online and can't find the part?

nvm, finally found it. brake light switch. I'm glad it's only a 10-15 dollar part! but I read to try spraying the hinge with wd-40 first, so I'm going to try that.