Distractions

A buzzing in my ear
An itch in my lower back
There\'s something in my shoe
Sticking me like a tack.

My head is pounding
My brain absolutely fried
I crammed all last night.
Maybe I shouldn\'t have tried.

I know that I need to focus,
I should be trying my best.
Oh, why do these distractions
Always appear while taking a test?