ROM brain
n. A person who refuses to accept input and ideas from other people.

Example Citation:
LRF support (noun) — "Little Rubber Feet." An official-sounding but nonexistent feature of computer hardware or programs. Used when giving ROM brains a hard time.
Harry Choron, "The Book of Lists for Kids," Mariner Books, October 26, 1995

Earliest Citation:
The language-intimidation factor is very much alive on the Internet. Post a message on a bulletin board there and someone may tag you a "ROM brain." That's someone who spews ideas and opinions but can't seem to accept input from the outside world.
—Julie Schmit, "speak: Is it geek to you?," USA Today, September 8, 1995

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