Orignally made famous by the famous jockey Chris Wilson, a specific type of person can be referred to as "Beans". It is usually an offensive term to describe someone who is short and wears glasses. While the official definiton states that they show up when they aren't wanted, a popular extension of the offence states the fact that this is always true, as they are never wanted anyway.
"Oh no, here comes Beans."
"Not Beans. He's the worst type of person."
"Hey, calm down. That's bullying."
"He deserves it."