Shock! Hidden CCTV shows Justin Bieber and Ellen DeGeneres 'caught' kissing in the bathroom and caught by a bystander... See more

Looks like Ellen DeGeneres is a Belieber.

As part of his appearance on the Ellen show, Justin Bieber found a new way to get fans screaming – in fright!

On Thursday, a hilarious hidden camera prank by the 20-year-old pop star and the host had the audience laughing but some fans almost reduced to tears.

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Boo, baby! Justin Bieber and Ellen DeGeneres pretended to make out in the bathroom on Thursday’s show

The pair pranked a few fans be hiding out in the studios’ bathroom pretending to make out.

When the person entered Justin and Ellen then screamed prompting some fans to run away and a few more to swear.

However, the two jokers – who also played recorders, sung and had a puppet in the bathroom with them – got their comeuppance when two Justin fans, after they got over the shock, started screaming louder than he and Ellen did in the first place.

Unexpected stop: Justin had surprised fans – not just in the bathroom – by appearing at a pre-recording of the Ellen DeGeneres Show on Wednesday

Perfect prank: When an audience member entered Justin and Ellen then screamed, pretending they had been caught out

One of the fans even showed she had good manners: ‘Hi Justin! Oh my God, thank you so much. Nice meeting you!’

To which Ellen responded: ‘You too! Nice meeting you in the bathroom.’

In addition to shocking a few audience members in the bathroom, Justin had originally surprised fans by appearing on the Ellen DeGeneres Show.

Not creepy at all: The pair changed it up on a few fans, pulling weird poses

Bleep! This woman was so frightened she swore while others ran away in fright

The Beauty And The Beat star has returned just a week after appearing during Ellen’s birthday show.

Last time did not go so well, something the singer acknowledged in a public apology video on his Twitter afterwards, so he wanted to make amends.

Claiming nerves got the better of him last time, a soft spoken and still, it seems nervous, Justin told Ellen why he felt it important to make the apology video.

New tactics: The pranksters also played recorders, sung and had a puppet in the bathroom with them

Hitting the high notes: The two jokers got their comeuppance when two Justin fans, after they got over the shock, started screaming louder than he and Ellen did in the first place

Politely terrified: One of the fans even showed she had good manners, ‘Hi Justin! Oh my God, thank you so much. Nice meeting you!’

According to the megastar, he is doing his best to be a better person but gets very worried about what people think.

Explaining why he was so nervous in the yet to-be-aired episode, he said: ‘It was the first time I was on television for a long time and I just was worried about what people were thinking about me.

‘Like I said last time, I did a lot of things over the past few years that I’m not proud of.

Round two: The Beauty And The Beat star returned just a week after appearing during Ellen’s birthday show

Mea culpa: Last time did not go so well, something the singer acknowledged in a public apology video on his Twitter afterwards, so he wanted to make amends

‘[I made the video because] I thought I just looked really extra nervous and I kind of just wanted to explain myself.’

People forget that under the stardom he is a real person, Justin continued.

‘I am a human, people often forget that.

‘Even with their comments and stuff they think it doesn’t get to me. But it gets to me.

‘I’m human’: Claiming nerves got the better of him last time, a soft spoken and still, it seems nervous, Justin told Ellen why he felt it important to make the apology video

‘You know things that people say bothers me and I got to be strong enough to just keep it pushing.’

The young star has been seen recently with his preacher and was reportedly in seclusion at the end of the last year to focus on his bible studies.

Clearly he is trying to take lessons from his religion: ‘I love people, I love love, I’m passionate about things and I’m passionate about being better and growing so I think that this is going to be an awesome chapter in my life and I’m so glad that I have you guys [the fans] supporting me.’

He also was making amends in a very real way on Thursday, with TMZ reporting the star was spotted at his probation check-in at the Santa Monica Courthouse. The meetings are required after his plea in last year’s egging vandalism case.