That's just bullying. Imagine if that's not Justin but it's you instead. How would you feel about this? Happy?
It's pretty ironic because a lot of people reposting this claimed that they are bullied. So you probably know who it feels like to be laughed at when you wanted to kill yourself.
I once told someone who reposted that it's not right and they told me it's just because that I'm a belieber and that I couldn't take a joke. To be honest, no, I'm not a fan of his. But I don't care who that person is. I don't care if I like them or not.
Again, suicide is no laughing matter. Telling someone suicidal to "do a backflip" is just cruel and sick.