Justin Bieber pranks visitors on the Friends set, shows clip to Demi Lovato as she guest hosts Ellen

This artist knows how to have a good time, even when it means playing a friendly prank on others.

Justin Bieber showed up for an appearance on The Ellen DeGeneres Show on Friday, which was guest-hosted by the previous day’s guest — Bieber’s pal Demi Lovato.

While there Justin, 26, showed a clip of his recent shenanigans at the Warner Bros. Studio Tour in Los Angeles, California, in which the Yummy crooner posed undercover as a tour guide on the replica set of beloved Nineties TV show Friends.

The hidden camera prank saw Biebs offering to take photos of unsuspecting tourists as they perched on the iconic orange couch from the show.

While he eventually revealed who he really was to one group of tourists, another couple didn’t know that it was Justin Bieber until the taping of the Ellen show, which they attended as members of the studio audience.

Another group visiting the Friends set immediately knew that the strange and talkative employee was actually Justin — unsurprisingly, it was a group of young girls.

For one couple, he invited himself to take a selfie with them, before making a jibe at them and asking the pair to pose facing away from the camera so he could photograph the backs of their heads.

‘This is a better angle for you guys,’ Justin told them.

For another pair of visitors, Bieber asked them to get up off the couch to fluff the pillows and cushions, which kicked up quite a dust storm. 

While on the show, Bieber jokingly told Lovato he believes his marriage to wife Hailey was ‘arranged’ after first being introduced by their Christian parents in 2009.

The singer, who wed Hailey, 23, in 2018, made the revelation that their first encounter was years ago when they were aged 15 and 13, and said that their parents ‘set this whole thing up.’ 

Justin also opened up to Demi about his recent battle with Lyme disease, assuring fans he is healthy following his diagnosis and is looking forward to his wife joining him on his upcoming tour.