ELI5: Explain Like I'm 5

Secondman

Okay kiddo, you know how sometimes there's someone who talks to you about what you're doing and helps you do it better? That's kind of like what a secondman does.

In some jobs, there might be a person who helps you do your work and keeps track of what you're doing. They might give you advice and make sure you're doing everything safely. That person is called a secondman.

For example, if you were playing a video game, the secondman might sit next to you and coach you on how to get to the next level. Or if you were driving a big truck, the secondman would sit beside you and tell you when you need to turn or slow down.

Basically, a secondman is someone who works alongside you and supports you while you do your job.