I can't write a poem By Ruby

Forget it
You must be kidding
I only have a three second memory
My pencil is white
I'm blind
I have a duck in my face
I keep falling a sleep
My desk is white so i can't see the paper
I lost my brain
I have a mean pencil
Time's up? Uh oh!
All I have is a dumb list of excuses.
You like it? Really? No kidding.
Thanks a lot. Would you like to see another one?