AceShowbiz -

Justin Bieber pulled an April Fools' Day prank on entertainment and celebrity site TMZ. The pop star tweeted the site's tip line to his 37 millions followers, claiming that it was his. "As promised taking all fan phone calls TODAY at (888) 847 9869. Talk to u soon!" he wrote on Monday morning, April 1. Later he wrote again, "Did everyone call me yet?"

TMZ staff Dax Holt apparently was amused at Bieber's idea. "The phones here at TMZ won't stop ringing!!#BieberAprilFoolsJoke LOL! So funny," he wrote. He also shared a video of a busy switchboard. "Best April fools joke goes 2 @JustinBieber. He tweeted out TMZs phone # saying he would be taking fan calls. Well played Bieber, well played," he praised the pop star.

Bieber has deleted the tweet, but the site might still suffer later because the line is toll-free. The site has to pay a hefty phone bill due to the enormous calls.

Bieber is currently in his "Believe" tour. On Saturday, March 30, Franz Josef Strauss Airport's spokesman said that the Bieber's pet monkey Mally was detained in the customs because he could not provide required documents. As the results, he had to let Mally stay at the airport with his expense. He reportedly faced $15,000 fine as well.

The Canadian singer performed in Vienna Stadthalle in Austria on Saturday, March 30. Austrian Times reported that many fans in the full-house concert needed medical attention because they experienced hysteria known as "Bieber Fever." 178 fans had to be treated after feeling lightheaded and fainted as the concert started.