1 definition by Fatboy67

Top Definition

Adjective: The attitude one exudes when having menstrual cramps, and being grumpy (ill-tempered, irritable, grouchy) because of it: Grampy.

Example: Sorry I was so Grampy this morning, baby, but I have PMS, and my cramps are really bad today.

by Fatboy67 September 28, 2013