http://sportsillustrated.cnn.com/2012/highschool/02/16/piggyback.bandit.ap/index.html?sct=hp_t2_a20&eref=sihp

HELENA, Mont. (AP) –– The stocky man showed up in a basketball uniform for a game at Century High School in North Dakota. Players and coaches assumed he was a fan who had come with another team, so nobody objected when he began to pitch in around the bench.
"He helped lay out uniforms, got water. He even gave a couple of kids shoulder massages. Creepy stuff like that," said Jim Haussler, activities director for the Bismarck Public School District.
After the game was over, the man joined the winning team on the court and asked if he could get a piggyback ride. One bemused player gave it to him.

....

"He was jumping on players' backs after they showered and came out of the locker room," Colbrese said.

We had problems with that guy doing the exact thing in my City a few years ago.   Statewide LE alerts went out on him.  He was going to colleges and high schools doing the same thing.

I am surprised someone's dad didn't kick the shit out of him.