Nightmares are only a figment of your imagination that take time to develop in to mind lapses

Run up the stairs,
To the corridor of doors,
Stop on a dime,
Turn on a Rhyme,
Nightmares occupy this hotel.
Open the door and find your worst dream come true.
Hide beneath the bench.
But its really no matter!
They will find you sooner than later.
And bring you memories of the butterflys.
Young man, your best bet is to jump the railing,
and pray when you die god will take your soul willingly.