Graffitti in Bathrooms

Today after class I went to the Barnes and Noble across the street, I got a drink from the cafe and used their restroom. When I closed the door behind me, I noticed there was graffiti on the door. While I don't really understand WHY some ppl feel possessed to write on the door, I thought it was amusing and took some pictures, I will now put them up for your viewing pleasure.
This one is my favorite:

Jury Duty

Whirrrrrr, whirrrrrr, whirrrrr...that was the sound I awoke to this morning as my step-father drilled around our bathroom's doorhandle. The bathroom was opened at 7 o'clock which meant that, unfortunately, I still had time to get to Jury Duty. I got there about a half hour late, due to traffic, difficulty with the GPS, and getting gas before hand. But it wasn't too terribly late, people were still coming in. I spent most of the time bored out of my mind, but I got to go home early because no one in my group was picked (we were a group of 40) and some cases had cancelled. So I got to leave two hours early, and now I am home and I am exhausted. But like I said, most of the time I was bored...and cold, they keep it freezing in the courtrooms.