Haunted Nail, dont know what to think about this Options

(IMG:style_emoticons/default/insane.gif) Now our house has been getting kinda funny(others say creepy but..) most things as sounds and things dissapearing and coming back
can be put on the account of curius beings but.
We have a nail in the door step to the living room that just keeps popping up the nails beside is not affected i have nailed it in around 10 times already and nailed in 1 on each side to verify its not the board moving.
I meen wtf a nail?
I know they move over the years and so but whitin 25 minutes max it pops up again slowly thou as its being pulled..
anybody got an explanation?

the nail is growing like a mushroom hehhe well i am going to beat this nail before anybody else gets hurt

You know there is the possibility that some fungus is growing inside the hole made by the nail and that as it grows it pushes the nail out.

i've never known fungus to grow that fast! However, maybe its magnetism? Whats beneath the floor board? and is the nail being forced in the center? quality control could of messed up the wood surface of the board...it could be aslant, and weight from either end would push the nail in the center upwards. Or maybe you just have really clever mice! (IMG:style_emoticons/default/hmm.gif)

if i were you, i would hammer the nail into a different location on the floor. Who knows? maybe the piece of wood is haunted? look at the wood very closely! do you see any faces? (IMG:style_emoticons/default/laugh.gif)