A social construct is an idea that other people give you. A table, as a device that has four legs and whose purpose is to hold something up, is a social construct, because when you were coming into this world you didn’t know it was called a table or what it was used for. Was it for sleeping on? Was it an altar? Over time and through experience you learn that it’s called a table and that you do certain things on a table and not other things. You didn’t come up with the word ‘table’ nor the rules for what you do on a table, but you don’t turn it up side down or put your grandma on it. Hell if you even sit on it, you know deep down that that’s not what it’s meant for. And you know why? Because the idea of a table was not your idea to begin with. It was somebody else’s.