We’ve all had the odd zit, pimple or blackhead, haven’t we? Usually, and annoyingly, before a big date or a job interview. You notice it, you squeeze it, you wait for it to go away (top tip: Try smearing a little toothpaste over the area). What you don’t do is leave it. For 25 years. Unless you’re the person in this clip! They cultivated their blackhead for two and a half decades. And when they finally buckled and removed it, they video’s the horrifying results…