Dream of becoming imbecile symbolizes unexpected benefit from a powerful stranger, long life or prosperity.
Dream dictionary: Imbecile dream meanings
…In a dream, a mule represents an obstinate and a stupid person, an imbecile or a bastard. A mule in a dream represents an illegitimate child who is born from a foreign father in adultery. Riding a mule in a dream means longevity or marrying a barren woman. If one sees himself mounting a saddled mule which is travelling toward Mecca in a dream, it means that he will soon perform a pilgrimage. Wandering on a mule in a dream means benefits. An obstinate mule in a dream represents a cunning person. Riding a mule in a dream also means having a dispute with someone. A weak mule who cannot be controlled in a dream represents a niggardly and a wicked person. Riding on top of loads a mule is carrying, and if the mule is consenting in a dream means controlling one’s environment….
…(Candor | Eagle | Enemy | Evil | Imbecile | Thieves) A vulture in a dream represents a stupid, abominable and a lewd person. When seen during a daylight dream, it means a grievous illness. If one sees a vulture inside his house in a dream, it means sending help to assist someone in difficulty. Capturing a vulture in a dream means a fight or war. A flock of vultures descending upon a town in a dream represent an occupying army with merciless soldiers who will plunder such town. If a sick person sees a vulture inside his house in a dream, it means the approach of his death. As for a tanner and a potter, or the like craftsmen, seeing a vulture in a dream means profits or benefits. As for physicians or sick people, a vulture in their dream purports evil. In general, vultures in a dream…