A juvenile who apparently thought it would be fun to pretend to be an armed robber is now facing a charge that is no laughing matter.

Over the weekend, a juvenile approached three people outside a bowling alley near 10500 S. State. The 16-year-old told the group he had a gun, demanded money and then not only told them he was going to shoot them but also went into detail about how he was going to do it, said Sandy Police Sgt. Victor Quezada.

The men told the boy they only had $1, so the boy left, Quezada said. During the robbery, however, a person who saw what was happening called police, who were on their way before the boy left the parking lot.

Witnesses gave officers a good description of the car the teen and two of his friends were last seen driving. Police pulled it over a short distance away from the bowling alley and arrested the teen.

The juvenile, who reportedly has a history of playing pranks, although never to this extent, thought what he did was just a joke, Quezada said.

"He thought it would be fun to scare someone," he said. "He said it was a prank. He had no intention to harm them and really didn't want the $1."

And police aren't laughing. They say the boy is lucky he wasn't harmed or even killed, Quezada said. The people he was pretending to rob with a fake gun could have had real weapons and used them in self-defense, he said.

The boy faces a charge of aggravated robbery, a first-degree felony, in juvenile court.