Forrest Gump is a really instructive movie. It tells about friendship and then love.
He brings a touching gravity to the role of an idiot savant from the South who finds strength in God, country, his childhood pal, Jenny, and his good mama. When Forrest falls a few IQ points shy of minimal school requirements, Mama knows who to sleep with to bend the rules. Her son has a gift. As Forrest makes his pilgrim's progress from the '50s to the '80s, he becomes a college football star, a Vietnam war hero, a shrimp tycoon and even a father.
In a college dorm with Jenny, who lets him touch her breast, the virginal Forrest ejaculates instantly, losing her interest and his self-respect. In the Army, Forrest saves his captain, whose legs are later amputated, and the captain resents him. Forrest is everything we admire in the American character — honest, brave, loyal — and the movie's fierce irony is that nobody can stay around him for long.