If you see someone covered in tattoos and piercings you'd normally be a bit scared, but if you listen to Scary Guy and think he's okay afterwards, you might not judge people so quickly in the future.
Schoolkids listen hard to Scary Guy
He also asks everyone to stop bullying and name-calling for seven days, because he thinks it'll make you feel loads better at the end of it.
And according to Scary Guy it works.
He said some kids he talked to three or four years ago have called him since and said the things he taught them changed their lives.
Hear story
Watch Becky Jago's report
How can we stop bullying?
I was bullied because I'm overweight
