Jimbo Kern is Stan Marsh's maternal uncle, a Vietnam veteran, and an avid gun enthusiast. He first appears in the Season One episode, 'Weight Gain 4000'. Jimbo was a helicopter pilot in the Vietnam War where he met his lifelong buddy, Ned Gerblanski. However, his memory of the events are heavily distorted. When he relates his memories to the boys for their history assignment, he recalls that there were amusement park rides and that he and Ned defeated the entire Viet Cong by themselves, and then riding away on a white stallion. Mr. Garrison does not believe the boys' story, thinking that they made it up, and gives them detention. Mr. Garrison also hints that he was in Vietnam himself. However, a cameraman who was also a Vietnam veteran appeared to share memories of amusement park rides as well, implying that while some of Jimbo's story was fabricated (him and Ned winning the war single handedly) other aspects of his retelling was truthful. (Source: Fandom.com, CC BY-SA)