S - Sit in your boss's office and answer the phone pretending to be him.... When he comes in,tell him you just blew off the $10,000 loan he was applying for because you think he's an idiot..
Bore a hole in the wall of the women's bathroom and charge your co-workers 2 bucks to take a look. Tell the cops your boss made you do it.
C: Cut your toenails on your lunch break. on the lunch table. then put it in someone's food. haha gross
K - Kick all the garbage into your boss's office then carry on about not wanting to do overtime this weekend,stomp your feet,etc......