Dr. David Nelson is a man with dwarfism who comes to the South Park Elementary to give a talk about his experience in the Season Eleven episode, "With Apologies to Jesse Jackson". He was voiced by Trey Parker by taking in helium to create the distinct high pitched voice.
Dr. David Nelson is a man with dwarfism who comes to the South Park Elementary to give a talk about his experience in the Season Eleven episode, "With Apologies to Jesse Jackson". He was voiced by Trey Parker by taking in helium to create the distinct high pitched voice.