Taylor Swift joined Keith Urban on stage.

Taylor Swift once pranked her friend Keith Urban right during his concert. She appeared on the stage dressed as a member of Kiss. Together with other musicians and dancers, they made a great performance — they danced and sang along.

Even though Keith tried to stay serious and continue singing his song, he failed and started laughing. But eventually, he pulled himself together and finished the song to everyone’s joy.

Daniel Radcliffe changed Robbie Coltrane’s phone into Turkish.

While filming Harry Potter, the young actor played a joke on his co-star Robbie Coltrane. He took his phone and changed its settings from English to Turkish. The prank worked out: the infuriated Coltrane was unable to make calls and had a hard time finding anyone on set who could change the settings of his phone back to English.

Later, Radcliffe apologized to Coltrane, and they were good again.

Conan O’Brien took over Pete Cashmore’s job for one day.

In the early morning of April Fools’ Day, Conan O’Brien announced that he bought Mashable for $3,500. The website employees played along and changed the website’s usual blue color scheme to orange color. Pete Cashmore, who is Mashable’s CEO, just had to accept the bitter truth.

However, the coup lasted only one day, and the following day everything returned to normal.

Rob Mallard put provocative notes into Charlotte Jordan’s props.

The Coronation Street star revealed that he played childish pranks on his co-star Charlotte Jordan on set. He would put little provocative notes into her props which the actress had to discover right during the take. The actor did it to see if Charlotte would be able to keep her face straight and laughed if she couldn’t.