I worked at a fast food joint once. I didn't want to harm anyone, damage property or anything like that. That would not only cause harm to others but would also make you look like a total idiot.
What I did was tame. I already had another job I had just gotten and within a month I was offered a full time position with them. I kept complaining at the manager how lazy I felt they were and that I could run circles around them. I told her I was tired of having to do all the work myself. She asked if I wanted to leave and I said.. "Yes as a matter of fact I do. I have a better job, with good people who aren't lazy. I'm not leaving because you asked, I am leaving because I QUIT!"
I threw my nametag and apron on the counter and gathered my belongings. Just as I opened the door in a huff, I turned around and the second the door shut, I yelled "FUCK YOU!"
hehe