Mirkin thinks it is hard to make a "boring" and "tedious" character, such as Grampa, funny. He believes that what ultimately makes Grampa funny is that the things he says are "actually funny" in the context of the boredom and the tedium. Anne-Marie Barry and Chris Yuill, the authors of the book "Understanding the Sociology of Health", commented that in episodes in which Grampa appears, the comedy content is often generated by Grampa falling asleep at "inopportune" moments or "embarking" on long rambling stories about his youth. "Instances such as these match popular stereotypes that all old people are 'demented' and in poor health," they wrote.