I can't write a poem...

I cant write a poem.
Because I dont know what its about.
My pen is frozen, the words wont come out.
Its hard to express when I just don't know.
Especially when my pens ink doesnt flow.
Your making me write a poem that rhymes!
Why are you making me do this crime?
If I had an idea, the words would just pour out.
So I thought really hard what my poem should be about.
Since now my pen is back to normal, now I can write,
In the dark glow of my bedsides light.