Jack o' Lantern --> jackass is male donkey --> fuck dat here's an abundantly female donkey

so every year the people of some sleepy hollow-ass village wait for this ditzy witch to show up and they put this pumpkin over her head somehow or another and she thinks she's been cursed with a pumpkin head (because her head is about as much good as a pumpkin) and enchants all pumpkins 'n' such and everybody has a good time

will continue to work on this image later but this is somewhat presentable now so there it is