It's almost over

I'm subbing for a 4th grade class today and they're trying so hard to get a reaction from me. I just kind of sit back and laugh, they're so ridiculous they don't even know. I kept 4 boys in for recess and they told me how mean I am and because my feelings weren't hurt, they kept getting frustrated. I'm so relaxed in this class, they literally can't stand it. It's one try after another to piss me off, but I refuse to go there. I just don't care enough for my mood to change, especially for a group of 9 year olds who have nothing to do with my life after 2:30 today. 2 hours and counting...