"Unexpected. That is what I want you to remember: unexpected," Sef Scott said as he began his speech to the Plano Senior High School class of 2018. The teen, who has Autism, is usually nonverbal, but he brought the house down at his high school graduation in Texas when he stepped up to the podium and delivered an inspiring speech about doing the unexpected. The crowd responded with cheers as Scott spoke. InsideEdition.com's Keleigh Nealon (http://twitter.com/KeleighNealon) has more.