If 你 could prank call someone, who would it be and what would 你 say?

I'd prank some people I didn't like, and maybe a few of my teachers, :P With some, I'd be mean and maybe insult them, 或者 pretend there was a 火, 消防 at their house, and with others, just crack a joke 或者 something like "Is your refrigerator running", :P
What about 你 guys?