Such a harsh mistress you are. 

Time and time again you sneak up and leave me bewildered just as I let my guard down. 

You take away my energy, my sanity and my happiness.
You are the incessant fly just outside the reach of a cow's stubby tail.
The barnacles beneath a ship's hull.
The sunlight beaming off a thousand reflective surfaces just as the sun sets.

The split second lag before the ticket barriers accept your offering.

Before you cause me to write down more first world pickles I will say this.

I do not enjoy your presence, exams.