Answer:
What do you call a pig that is no fun to be around?
As I went over London Bridge I met my sister Jenny; I broke her neck and drank her blood and left her standing empty.
I contain six letters, minus one and you got twelve. What am I?
What has keys but no locks a space but no room and you can enter but can't go in?
Cold head and feet; round as a ball; always turning around myself.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.