AceShowbiz -

This Adele fan got much more than she bargained for when she attended the singer's show at Glastonbury. During her headlining set at the annual festival this weekend, the "Hello" hitmaker invited the lucky fan named Maria to join her on the stage for a selfie and accidentally burped in the girl's face while they were posing next to each other.

In a video taken during the funny moment, the two were standing side by side when Adele shouted, "Oh my God, I just burped!" She burst into laughter before giving Maria a big hug and telling her, "I'll see you later Maria."

The 28-year-old then defended herself, blaming the burp on a "dirty burger" she ate before taking the stage. "I had a dirty burger before I came on, that's why."

That was Adele's first appearance at Glastonbury. During her 90-minute set on the Pyramid stage, she sang her biggest hits, which included "Hello", "Someone Like You" and "Rolling in the Deep", and swore a lot despite her show being broadcast on BBC and a bunch of children in the audience.

Adele revealed that night that she was already warned by BBC to watch her language, but she still reportedly swore more than 33 times during her performance. "Do you know how rock & roll I am? Not very, but the BBC had to give me a warning about my potty mouth before I went on. I bet Muse didn't get that," she told the crowd at one point.

As a result, a lot of viewers expressed their displeasure on Twitter. "Adele please stop swearing, there are children watching, as you very well know coz you just brought one on stage!" one fan said. Another added, "Adele stop swearing. Children in audience. Inappropriate languageispower."