Adele
Adele, winner of Album Of The Year and Best Pop Vocal Album for 25 and Song Of The Year, Record Of The Year and Best Pop Solo Performance for Hello at The 59th Grammy Awards at Staples Center on 12 February Getty

Adele's music has the sophisticated tones of a classic ballad, her videos ooze a sense of finesse and she is most often seen in glamorous hairdos, makeup and gowns. Despite all these frills, the Tottenham, London-born singer is famously known for her potty-mouth, casual stage presence and hilarious interactions with her audience.

At award shows, she proves she has no qualms about laughing in what could be considered a very "un-lady-like" manner or flipping the bird when her acceptance speech is cut short (as at the 2012 Brit Awards). She even dressed up as her own impersonator and performed on a BBC One special in 2015.

But some of the multi-award winner's funniest moments are those seen live by fans attending her concerts. During her world tour, which kicked off in February 2016, the Hello singer amused audiences with more than just her music. The tour is set to wind up in London on 2 July 2017 so we can expect numerous other comic encounters, but on the occasion of her 29th birthday on 5 May, IBTimes UK takes a look at some of the past hilarious moments from her tour so far.

The singer switched to dirty stand-up comedy following a power cut

During one of her March 2017 shows in Adelaide, Australia, there was a temporary power cut. While most of the musical instruments were not working, the singer was still able to use her mic.

Adele decided to treat her audience to some naughty jokes until the issue was rectified. "So we're having a technical difficulty," she said to her audience. "I'm not quite sure what it is. Shall I try and tell some jokes?

"What do you call a blonde standing on her head? A brunette with bad breath," she told the crowd.

Adele gets a same-sex couple to get engaged on stage

With so many songs about love, it is no surprise that Adele jumped at the chance to play cupid in Copenhagen. In May, she invited two fans onstage for a marriage proposal. "I'm going to cry!" she said.

The Rolling In The Deep songstress invited a group of Irish singers to perform with her after their video went viral

At Dublin's 3Arena in March 2016, Adele invited Irish singers Ronan Scolard and Glenn Murph to join her in performing on stage. The duo had gained internet fame after their cover video of her songs went viral. "Oh come on, you can't put it online and me be in Dublin and not think think I'm gonna tell you to come up," she told them.

Adele urged a fan to switch off her video camera and simply enjoy the live performance

The singer interrupted her performance while in Verona, Italy in March 2016, to tell a fan to stop filming her and simply enjoy the show. "Yeah, I want to tell that lady as well, can you stop filming me with a video camera because I'm really here in real life. You can enjoy it in real life, rather than through your camera," she said. "Can you take your tripod down? This isn't a DVD, this is a real show. I'd really like you to enjoy my show because there's lots of people outside that couldn't come in."

Adele photo-bombs fan during concert

Getting photo-bombed by a celebrity is one of the coolest things that can happen to a fan, and one woman got a treat when Adele decided to pop into the frame. During the singer's concert in Manchester, England Kerry Scott shouted out to her, asking for a selfie. "She couldn't come down off the stage but she posed for the picture and she said that my hair looked great," Scott told the Liverpool Echo. "I just couldn't believe it."

The Skyfall hitmaker attempts twerking

Audiences attend Adele's concerts to enjoy her beautiful voice, but this one time in London's O2 arena, the singer treated her fans to a comic attempt at twerking.

"I think I just twerked!" she said. "I can't do it that well. My whole body has to move," she joked. "My bum could break my back, it's so enormous."

While in Ireland, Adele helped a girl propose on Leap Day

Adele kicked off her tour on 29 February 2016 in Dublin, and in keeping with the Irish Leap Year tradition, she encouraged women to propose to their partners. One woman in the audience explained she had popped the question but got a weak "maybe" in response.

"You got to say 'yes' Neil. You need to say 'yes', bruv," Adele told the man in question.

What were the words again?

While performing at the MEO Arena in Lisbon, Portugal, Adele managed to forget the lyrics to her own song. "Sh*t, wrong words," she said, before cracking up with laughter. "Should I sing the right words? Sorry."

Adele told music producer Tony Visconti to "suck my d**k"

In June 2016, music producer Tony Visconti suggested that Adele's voice had probably been manipulated on her album. The singer lashed out at the David Bowie producer during her gig at Paris's Accor Hotels Arena.

"Some d**khead tried to say that my voice was not me on record. Dude, suck my d**k."

Visconti later apologised for his remarks. "If Adele has taken my comments as offensive that was certainly not my intent," he told Billboard magazine. "Adele has a great voice and it brings pleasure to millions."

Adele accidentally kisses a fan on stage

One Nigerian fan took his chance when invited to join Adele on stage during her concert in Vancouver in July, and kissed the singer on the lips... The Oscar-winner leaned forward to give him a hug but the two ended up locking lips instead. "That's the first time I've kissed another man in seven years," she joked. "He just snogged me... thanks for the kiss."