It could be something as simple as telling them that their fly is open or that there's something dangling from their nose. Or, it could be something like, "Your parents were just eaten by alligators."
OR IT COULD BE THAT OSAMA BIN LADEN ABDUCTED YOUR CAT AND NOW YOUR CAT LOVES OSAMA BIN LADEN MORE THAN HE LOVES YOU.
Contest duration--ehh. Judging will take place--ehh.
I am going to judge this contest on Saturday, so you will have to wait until late Friday night or early Saturday morning to get your entries in for them to qualify as "last-minute."