Officers in the courtroom quickly grabbed him and escorted him out. He was brought back into the courtroom a short time later and said he did want a lawyer.
Investigators extradited Stancil from Florida to North Carolina late Wednesday night.
They said he hitchhiked to Florida after the murder at Wayne Community College Monday morning. Authorities said Stancil admitted to a judge on Wednesday that he killed Ron Lane, and said he did it to protect his 16-year-old brother from Lane's sexual advances.
Stancil also said he's a neo-Nazi who hates gay people, authorities said.
In a telephone interview from a Daytona Beach, Florida, jail, Stancil said Lane found his brother on Facebook and made advances, although Stancil said Lane never touched the teen. A Goldsboro police spokesman did not immediately return a phone message Thursday about Stancil's allegation.
Stancil told a Raleigh television station that he killed three other people in the past four years, but investigators didn't say whether he is a suspect in those cases.
Stancil said he doesn't regret what he did. He said he would do anything necessary to protect his family, and that he said he expects to go to prison for the rest of his life and isn't bothered by that.