On the Haddonfield map there are 2 mattresses.
This first mattress is the more well known mattress however there is actually another.
This second mattress has been thrown aside on the deck.
This makes me wonder, what in the Entity's name did Myers do to that first mattress that made him ultimately decide to throw it away?
My theory is that the dude just ate a mountain of fudge and wasn't very clean about it, but I am curious to hear other people's mad theories.