Secret Society themed b-day party pranks pizza guy

SAN DIEGO, CA -- An unsuspecting pizza delivery guy thinks he's going out for a regular delivery but, San Diego photographer, Tim King has other plans.

He decided to throw himself a secret society themed birthday party and invite 8 of friends. From there they ordered a pizza, cued up some Gregorian monk music on the MP3 player, and let the fun begin.

The pizza guy's reaction to the bazaar setting is priceless.

Full video contains graphic language, viewer discretion advised: