Have you ever went to pick a booger that wasn't even there? Does your nose make spooky whistling noises? Have you ever went to pick and flick yet there wasn't anything there to flick? Well you may be suffering from Ghostboogers. They put the Boo in booger.
Most people don't know this, but if you're nasty and leave your Pizza out for 13 years...it becomes a Teenager. Once this happens it begins to grow hair in places that it didn't have hair before and a mutation takes places transforming it into a Teenage Mutant Ninja Pizza. It's still unclear on how it becomes a Ninja, but when the pizza you should have thrown out over a decade ago jumps up and starts smacking you around, you don't ask questions.