Tell Me Why I Don't Like Mondays

Can I just rewind and start this day over again? I've already been crabbed at for something I didn't even do and I managed to misplace the cd I needed for the quiz this morning. I've got a hard enough shell to deflect the misdirected crabbiness and I was able to grab a copy of the cd from the lab before class, but I still can't find the original cd, it's not even noon and I'm all ready to pack it in and escape. Who ever signed me up for this being an adult business anyway?