Best IAmA Threads

One of my favorite things to do when I'm on Reddit is to scroll through the IAmA and AMA subsections. Basically, people from all walks of life start threads in IAmA ("I am a") and AMA ("ask me anything") and invite people to ask any questions they have. It's really cool to see what lives are really like for people in different professions. Here are five of the coolest careers I've spotted on Reddit.