David Johnson lives in San Francisco. He’s well-known as Bushman. In 1980, he decided to earn money using an unusual method. He hides behind some eucalyptus branches, waits for unsuspecting people to wander by, and scares them making “oogah-boogah” noises. Bushman’s been entertaining people this way for 40 years. He earns around $60,000 a year. Here’s a video with Bushman