Someone who is smart and knows generally about anything, but ends up giving either false or too much information.
Example A
Me: Bob, do you know about the Boston Red Sox?
Bob: The Boston Red Sox is an American professional baseball team based in Boston, Massachusetts, founded in 1901. Their uniform consists of a standard baseball cap and shirt, and specifically red socks, hence the name of the team "Boston Red Sox". The Boston Red Sox is currently a member in the Major League Baseball's American League Eastern Division.
Me: K den.
Example B
Me: What's inside a hot pocket anyways?
Bob: Peanut butter, jelly, and two slices of bread.
Me: That's why it tastes like meat, thanks Human Wikipedia!