TLDR: Some other developers and I went to a hackathon, met an 'idea guy' there, and won first place. Afterward, he claimed that he and a friend who wasn't there

TLDR: Some other developers and I went to a hackathon, met an 'idea guy' there, and won first place. Afterward, he claimed that he and a friend who wasn't there owned "the startup". We then proceeded to write obnoxious emails to each other.