The type of atheist that, instead of intelligently arguing, will just spit insults at you and then bring up completely random things about religion that had nothing to do with what you were talking about when you refute their point.
"Dinosaurs were real!"
"Yes, they were real."
"What? You're not supposed to believe that! I tell you what you believe and what I say GOES! You do NOT believe in dinosaurs!"
"WELL SHUT UP, what about vestigial organs?"
"SHUT - UP, you're so ignorant! It's IGNORANCE! AAAAHHH!."
"You're a hypocrite and an ignoratheist... Stop wasting my time"