We were at a national tournament for 13's or 14's and we drove in a caravan from Illinois to Cincinnati. As did the other families, we wrote our team name and player name & number (SEAN #12) on the rear window. When we went back to the car after our first game, someone had written "STINKS" right under his name (except it didn't really say "stinks").
My son failed to see the humor at the time. We were no longer allowed to write his name on the car.
Mike F