My boss is the kind of guy that finds something that annoys you and just keeps doing it on purpose. He is a good humored guy and he thinks it is funny. I have been getting just completely annoyed by my new hire co-worker that is this straight out of college hipster using the word "literally" way too much. So he started using it every time he talks to me and today he has had all his other supervisor buddies start IM'ing me for stupid reasons and using the work "literally" multiple times. I can take a joke too, but I need to teach him that even though I am a subordinate there can be consequences if he goes too far. I need suggestions for a prank to do his office. Of course I want to keep my job and not destroy property. So let's hear your ideas.