Just a few days after storming off stage in Norway, Justin Bieber stopped a live performance in Spain because his fans weren't clapping properly.
During an acoustic version of "What Do You Mean", the Bieb stopped singing, halted the audience, and demonstrated the correct clapping rhythm.
At least clap on the right notes! C'mon guys. Stop, stop, stop, stop. It's like this: clap... clap...
If you're going to clap, at least clap on beat.
If you also want to learn how to clap correctly, skip to around 2:30 in the video:
Thank you, Bieber.