Elderly people who travel to Florida during the winter months. They arrive after Thanksgiving, go home for Christmas and come back the day after New Years and stay until Early April.
They clog the restaurants and the roads (driving 20mph under the limit) and love to pull out in front of you when there's no one behind you. Anyone growing up in Central and South Florida will have the opportunity to learn what all the license plates of the US and Canada look like. Only benefit is these people bring their money and stimulate the economy.
Kid: "Dad why did that old man from NY just pull out in front of us and drive slow?"
Dad: "Son, its wintertime in Florida, that is a snowbird"