An unemployed guy got a new job at the zoo. They offered him to dress up in a gorilla's skin and pretend to be a gorilla so people will keep coming to the zoo.
On his first day on the job, the guy puts on the skin and goes into the cage. The people all cheer to see him. He starts really putting on a show, jumping around, beating his chest and roaring.
During one acrobatic attempt, though, he loses his balance and crashes through some safety netting, landing square in the middle of the lion cage! As he lies there stunned, the lion roars. He's terrified and starts screaming "Help, Help!"
The lion races over to him, places his paws on his chest and hisses, "Shut up or we'll both lose our jobs!"