A funny video has emerged from Brisbane, Australia of a group of friends pulling off a hilarious prank on a pizza chain.

In the video, Tyson Williams calls a branch of a large pizza delivery company and places an order. He then puts that call on hold while he calls another branch of the same pizza company. Williams then asks the second operator to hold the line, returns to the first call and asks that operator to repeat back his order before quickly merging the calls so that the two pizza company workers are, without realising it, talking to each other.

After much confusion, and a lot of giggling from Williams and his friends, the two pizza company operators eventually work out what's going on and realise they've been the victims of a prank call.