That's going to leave a mark.

Five Deer Park teens have been arrested since October for "fence plowing," the latest rage among certain Long Island youths, according to Suffolk County police. The concept is simple: Pick out a fence, run toward it at high speed, and launch yourself like a missile to plow through the wood.

Another 10 fence plowing incidents are still under investigation in the Deer Park area, police said. The arrests were made after the suspects were caught on a surveillance camera installed by a home owner whose fence was plowed five times, police said.

The identities of the suspects were not made public. Along with bruises, the arrests could leave a mark on the suspects' permanent records: Police said some face felony criminal mischief charges.

Lt. Robert Edwards, commander of the Suffolk First Precinct in West Babylon, said the teens got the idea after seeing videos of other fence-plowing stunts on the Internet. He did not know if the teens in Deer Park posted any videos of the vandalism.

"They heard about it through other people who heard about and saw it on the Internet," Edwards told Newsday. "That's where they got the idea."