New Yorkers plug in giant boombox found in Manhattan, surprise holiday party ensues

Improv Everywhere's latest mission? Place a giant red boombox at Pier 17 in Manhattan for passerby to discover and plug in.

Real New Yorkers worked together to carry the 160-foot long cord across the pier to an oversized outlet. Once the boombox was plugged in, everyone was surprised by a massive holiday dance party with 100 acrobatic dancers, thousands of Christmas lights placed on two historic ships, and 10 hidden snow machines.

Behind-the-scenes photos of the mission can be found at the Improv Everywhere site. Read the rest