Boogers are strange things. Coming in many colors and forms, they perplex people of all ages. For some, they’re pesky irritations begging to be removed with a finger. They can also be quite troublesome when the flu strikes and your nose won’t stop running. Whatever the case may be, it seems like boogers were made to drive you crazy, but as we’ll discover, they’re more beneficial than you think. So, what are boogers, exactly? Grab a tissue, and read our list of 25 Booger Facts You Probably Didn’t Know.