Gilbride then wired up a rig that electrified the signs.
Surveillance video showed people taking the signs and getting shocked.
“This young lady came running through and she grabs the signs (and) pulls them out and that’s where you can see, plain as day, the jolt hit her a little bit,” he said. “She just stopped ... just a dead stop,and soon as the pulsing was done, she kinda got her senses and ripped them out and took off running down the street. But it was a pretty funny video.”
Gilbride shared footage from his surveillance camera with KIRO Radio. It can be seen on the radio station's website.