My most dreaded chore

Two of my children sleep in bunkbeds.  Perfect for a room that would not allow two singles side by side without giving up a lot of play space and feeling a bit cramped.  I really do like them and they work well. 

However when it comes time to change the sheets my love turns into disgust, exhaustion, and sometimes some not so nice words.  Starting with the dreaded top bunk I couldn't help but snap a shot of this:

Now, my oldest is on the small side for a 7 year old, but where exactly is she sleeping?