1) A person who resembles Val Kilmer in either physical appearance or social mannerisms, or both. 2) A person given to constantly quoting Val Kilmer's lines from the film "Top Gun." 3) An untollerable know-it-all.
Mr. Block is always certain that he is correct and won't stop telling us how dangerous and foolish we all are. He even looks like Val Kilmer. He is such an iceman.