When will afternoon become evening?

The blanket covers me
til I'm drowning in fabric
I can't stand it
it hurts, it hurts
yet I'm freezing
it's so cold I need it, I need it
I could do without the drowning
it's like the one lover who
didn't love you back
it's a train that's jumped its track
just to crack your back
when you went for a walk
and now your body is surrounded by white-chalk