Continuity mistake: In numerous shots of individual characters, while on the island, the sweat stains on their clothing significantly and repeatedly change, or disappear and reappear between shots.
Continuity mistake: Hugo "Hurley" Reyes is required to purchase two tickets because of his weight, and is the last person to enter the flight. At the end of the episode, Hugo sits next to an Asian man, while there are other people behind him in line.
Continuity mistake: Throughout the show the grime and dirt on people keeps disappearing and reappearing instantly.
Answer: He was eating a peice of an orange with the skin still on.
XIII