Pranks are fun, aren't they? People from one rival high school coming up with a master plan to have some fun at the other school's expense, and vice versa.

Well, it's all fun and games until someone slaughters a deer. According to Austin, Texas news outlet KVUE, a high school prank got some people a little miffed:

"When fans of Blanco High School in the Hill Country held signs reading "Slaughter the Deer," they apparently weren't just flush with team spirit.

The Comfort High School Deers volleyball team found a rotting, bloated carcass of a 90-pound doe in their bus before losing an important match Tuesday against Blanco.

If the culprits impressed any fans, their cover-up probably didn't. One of the Comfort High parents, Brian Vaughan, is a law enforcement officer. He says he found a bloody trail leading from the bus to a nearby pickup."

Ah, but that's not all. At a high school in Oklahoma, some kids thought of this comic endeavor - bring mercury to the football game! Hilarious!

"Snyder sports fans went to a football game, last Friday, for some fall fun and got a lot more than they bargained for. Someone brought seven pounds of liquid mercury. Mercury is a metal that can be toxic and cause permanent brain damage ... at least five students were questioned and two admitted they brought mercury to the game."

There's nothing like the old mercury prank. Oh, and the urination prank, too. This prank got some attention in the blogosphere in the past, but there's been a resolution:

"The Holliston High varsity girls soccer team forfeited Friday’s game against Medway, a week after pictures posted online showed members of the Holliston team appearing to urinate on the Medway High School field ... Following the forfeiture coaches from both teams decided to "get the girls together and have a little bit of fun ... They did training and running together - we got the girls knocking the ball around together," said Medway coach Jason Rojee ... They also sat together in a big circle, talked, stood up and let out a collective cheer."

Now, isn't that sweet? See, rivals can still be friends!