Thats pretty stirling advice from Noodle.
Corns are very placid generally speaking. They're so placid I've even caught wild ones in the states and never worried about being bitten. Basically snakes tend to have two strikes, a quick snap which means 'get off me'. And a full on 'feeding response strike'. The latter is much more deliberate.
All I'll add is some dislike being handled when shedding. And don't handle if you've been handling other animals such as pet gerbils, guinea pigs etc until you've thoroughly washed your hands. All snake keepers get 'tagged' at some point. Thankfully a corn snake does not have teeth that can cause any damage. I'm sure if he did get bit it would come as a real shock. But he's in no danger, even a feeding respons strike from an adult won't do any damage. It won't be pleasant but it's unlikely anyway.
You need to handle all reptiles with confidence. Tell him to lift the animal with one hand just behind the head and another supporting the middle. Handling animals like this must be a positive experience for both parties, so bear that in mind. Make sure it's lifted with confidence, if it does look like it's going to strike, present the palm of your hand if you can. It can't get any purchase on you then. That said, I really don't think you;ll have any issues with a corn.
I was tempted to post a pic I've seen online posted by the keeper of an adult reticulated python measuring almost 20'. The picture shows the aftermath of a serious attack on it's dutch owner (Think crime scene on an episode of CSI), but that would have been so mean!!! Trust me, corns are very docile, so docile I've let my 5 year old nephew handle them. I kept an eye on him obviously, but never, for one minute thought they'd be an issuE.
Go pick him up.....