Ron Weasley

Wizard Lice is a contagious wizarding disease that is similar to Muggle lice. In Ron's Disease, Ron Weasley was infested by it, so Harry Potter quickly took Ron to Rubeus Hagrid so that Hagrid could somehow cure him. According to Hagrid, there are many ways to kill wizard lice, including putting the victim's hair in poop and mayo. though Hagrid used another method, which involved pooping on the victim's head with Harry's butt several times.