1} One who helps him/herself to a table, whether or not a seating host is available 2} A party that has finished their meal completely yet hangs around for hours upon hours
A squatter is someone who lives in an unused building without having a legal right to do so and without paying any rent or any property tax. someone who lives in an empty building or on a piece of land without permission and without paying rent
In the United States and Australia the term is sometimes applied also to a person who settles lawfully upon government land under permission and restrictions, before acquiring title