The horse you rode in on

i think i've read this book before
hardbound shiny cover pretty colors
but an ending that's sure to disappoint
it's not what you'd expect when you open the box
and all the things you wish you'd find
fleeting and taunting
colors drab and ordinary
compared to the brilliant white of not knowing what's inside
but how can i bear to behold that dream now
that my eyes have adjusted to the concrete walls of this box that i've opened