I Hate My 9 to 5

My boss asked me to do something for him that I didn't know how to do. I asked a few preliminary questions before getting the response, "I'm gonna need you to take your brain off vacation mode and help me out here." No problem, I stop asking questions and start to do the job the way I assume he wants it done. When I finally finish in double the amount of time it should have taken, had I been given guidance, I give him the results and he says, "Okay. I didn't need all of this. I only wanted this one part. If you're confused about things or unclear at all, please just ask me questions. There's no point in wasting my time here." So when I ask questions, I'm an idiot. When I don't, I'm an idiot. I hate my 9-5.