Well, after he told the funny story, he might have noticed people's reactions. If they were really amused, he could have been surrounded by people asking him more about it or sharing their own similar experiences. He might also have felt more confident in his storytelling skills and be more likely to share other stories in the future.
He probably got a lot of laughter from his audience. Maybe he felt a sense of satisfaction for making people happy with his story.
After Josh Blank told the funny story, there could be several outcomes. He could have become the center of attention for a while. People might have started to see him as an entertaining person. His story could have lightened the mood of the whole group, and as a result, he might have made new friends or strengthened existing relationships. Also, he himself might have been in a really good mood because of the positive response to his story.