It is hard to say exactly what a pumpkin on your door may mean, however, there is a relatively new Halloween tradition that involves leaving a surprise gift on your neighbor's porch. Once you have been "boo-ed," you put a pumpkin on your door so that the other neighbors know.
Pineapples symbolize hospitality. Someone is wishing you a happy and welcoming home.
Fertility
They are a cat or someone does not like you.
Maybe someone was just messing with you.
It is a term of endearment, like "honey" or "sweetheart."
They don't like them
Your house smells.
It could mean they are vandals.
It means someone goes to every front door and when someone opens it, you talk to them about the product you are advertising. Or you stick fliers on mailboxes, driveways、and doorsteps.
Who said someone did. It possibly died there.
When a guy calls you "pumpkin," it's usually a term of endearment or a playful nickname. It can imply that he sees you in a sweet and affectionate way, similar to calling someone "honey" or "sweetheart."
a pumpkin is 'une citrouille' in French.
There refunding you for te night before
It means there is someone is at your door and just woke you up while you were sleeping.