How did the mouse get on your desk? I would have freaked out too! I once accidentally sat down on a rat. That was horrifying.
AH! I would've freaked out as well! I'm not really sure. I woke up this morning with a bad burning in my eye so instead of attempting to put my contacts in I figured I'd let my eyes rest and wear my glasses. Well, I was just sitting quietly typing away (my desk is huge, it spans the entire wall) and out of the corner of my burning eye I could've sworn I saw something... I thought I was losing my mind until I did in fact see the mouse making a mad dash towards my keyboard. I ran across the hall to the gym (i work in a physical therapy office) and asked the PT to help while I sheepishly stood on a chair in the hallway. It was running for its life, but thankfully it's gone now. :) I just hope he didn't have "friends".