Group of kids pose in front of primate exhibit at the zoo. A Gorilla comes and bangs on the glass while the kids are taking the picture, they get scared. School trip.
Zoo: Gorilla moons us.
A young boy screams and drops the towel around him after a bath when he's frightened by a man in a gorilla mask behind him.
AA: Balance. Gorillas drive tractor, balance toilets on heads. (costumed)
Surprise - Man in gorilla costume scares hospital maids who are walking by practical joke