Justin Timberlake fans are not happy! ...again... The *NSYNC member got EVERYONE talking at his latest show, but not about anything good! He took the stage at the Electric Castle music festival in Romania over the weekend, where he put on the most half-assed performance ever! And that's giving him a lot of credit for HALF! In fan footage posted on TikTok, the 44-year-old begins singing Can't Stop the Feeling! - his song from the Trolls soundtrack. But he quickly aims the microphone at the crowd prompting THEM to sing.