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1. a fixture at every medium to high brow party, a guy who only wants to talk about dinosaurs, and when the conversation quickly moves away from dinosaurs, will not accept that his moment is over and stubbornly starts gunning everyone down with obscure dinosaur knowledge bullets

2. Anyone in a social situation who insists on talking about a topic they are well-versed in
I had to get out of there, some dinosaur guy was berating Carol for saying her favorite dinosaur was Stegosaurus on the grounds that it's unarmoured flanks made it easy prey for fast land predators
by Not Matttttttttt December 09, 2013
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