Li'l Russell meets with Jaison, who stumbles on something on the forest floor and lets out an "ow!" no doubt because of those blisters from having no socks. Li'l Russell shows him that he does, in fact, have the idol. Why tell anyone? I think it's because Li'l Russell is so proud of himself that he just has to share it with somebody. Jaison says he's excited that "we" have the idol. Um, no. Li'l Russell has the idol. It's not a group project. Li'l Russell interviews that his original plan was not to tell anyone if he found the idol, but he wanted Jaison's trust and figured this was a good way to earn it. That said, he has no intention of giving Jaison the idol and every intention of letting him think he would.