Susanna: Pizza? You get pizza in an institution?
Raymond: Monday night is Italian night. It's normal knowledge that pepperoni pizza is associated with Italian culture.
First discovered on a relationship forum in late 2010 / early 2011; a young man insisted that forum members were blocking him from acquiring "normal knowledge" of relationships. When queried about the nature of this knowledge, said young man refused to answer, resorting to an annoying repetition of "Why are you denying me normal knowledge?!?"