A person who insistently promotes the Bing search engine without proper points against other search engines.
Bing user: "You should use Bing. They're run by Microsoft so you KNOW it's good."
Google user: "How is it good?"
Bing user: "It's faster, more reliable, and the results are better."
Google user: "but why?"
Bing user: "It just is. It's made by Microsoft!"
Google user: "Yeah, alright, you bingbat."