Have you ever been surprised to discover that some of your everyday objects have secret features? Well, get ready to have your mind blown! We have compiled a list of 30 such items that will make you say, «Who knew?!»

In this thread, hundreds of people shared their mind-blowing revelations about objects they use every day. Honestly, I didn’t know pretty much any of these, so I can’t wait to put them to the test. From smartphone hacks to gas station pumps, and even a few double-features about staplers, you’ll be left questioning if you’re using your things right.

Who knows what other features could be lurking in plain sight? Keep scrolling to discover more below and you’ll see why this post blew up with 14.4k votes and 11.9k comments.