A "medical condition" caused when a male grips his dick too tightly while masturbating, causing to him not enjoy sex with women (or men) as much because he's so used to the iron grip of his hand.
"Mr. Prince-Nez got gridical when he insisted on pulling out the flip chart and marker to demonstrate the cross referential interplay of the data points along the X axis and Y axis of those people who like lunch before 12 noon and those after 12 noon.