So there's this brother-brother doubles tournament every year at a local tennis club... Last year I played with my older bro, but now that he's in college I don't have anyone to play with. So I was thinking about signing my cat, Buttons, up as my doubles partner and then showing up with him in some specialized cat tennis attire. Would opponents find this funny or insulting? How would the tournament organizer react? Is it worth pulling off such a prank, knowing it would be a solid waste of 32 U.S. dollars?